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Tutors Answer Your Questions about Geometric formulas (FREE)
Question 167319: Robert has 4 red flags, 3 blue flags, and 2 white flags. How many 9-flag signals can he run up a flagpole?: Robert has 4 red flags, 3 blue flags, and 2 white flags. How many 9-flag signals can he run up a flagpole?
Click here to see answer by stanbon(18718)  |
Question 167030: In an office building, a room contains 54 chairs. The number of chairs per row is three less than twice the number of rows. Find the number of rows and the number of chairs per row.: In an office building, a room contains 54 chairs. The number of chairs per row is three less than twice the number of rows. Find the number of rows and the number of chairs per row.
Click here to see answer by ptaylor(1326) |
Question 167029: One number is 2 larger than another number. The sum of their squares is 100. Find the numbers.: One number is 2 larger than another number. The sum of their squares is 100. Find the numbers.
Click here to see answer by checkley77(3380) |
Question 167027: Find the area of a cement walk 3 feet wide that surrounds a rectangle plot of ground 44 feet long and 44 feet wide.: Find the area of a cement walk 3 feet wide that surrounds a rectangle plot of ground 44 feet long and 44 feet wide.
Click here to see answer by checkley77(3380) |
Question 166476: how do u find out the volume of an object if you know the mass and density?: how do u find out the volume of an object if you know the mass and density?
Click here to see answer by jojo14344(807) |
Question 164955: a,b,c,d,e are noncoplanar points on plane m,n: a,b,c,d,e are noncoplanar points on plane m,n
Click here to see answer by midwood_trail(221) |
Question 164934This question is from textbook Geomertry
: Write an equation for the line parrallel to XY that contains Z.
XY: 6x-10y+5=0, Z(-5,3)This question is from textbook Geomertry
: Write an equation for the line parrallel to XY that contains Z.
XY: 6x-10y+5=0, Z(-5,3)
Click here to see answer by Mathtut(308) |
Question 164311This question is from textbook 
: The width of a rectangle is 22 centimeters shorter that its length. The perimiter of the rectangular is 160. find its length.This question is from textbook
: The width of a rectangle is 22 centimeters shorter that its length. The perimiter of the rectangular is 160. find its length.
Click here to see answer by stanbon(18718) |
Question 164311This question is from textbook
: The width of a rectangle is 22 centimeters shorter that its length. The perimiter of the rectangular is 160. find its length.This question is from textbook
: The width of a rectangle is 22 centimeters shorter that its length. The perimiter of the rectangular is 160. find its length.
Click here to see answer by algebrapro18(153) |
Question 164005: Prove that the area of a circular sector of radius r with central angle theta is  , where theta is measured in radians.
The following is what I've come up with so far, am I on the right track?
I can tell that a circular sector looks similar to a triangle with an arc replacing its flat base. The area of a triangle is computed using A=1/2bh. Therefore:
h=r
b=s=r(theta)
A=(1/2)rr(theta) which is simplified to  : Prove that the area of a circular sector of radius r with central angle theta is , where theta is measured in radians.
The following is what I've come up with so far, am I on the right track?
I can tell that a circular sector looks similar to a triangle with an arc replacing its flat base. The area of a triangle is computed using A=1/2bh. Therefore:
h=r
b=s=r(theta)
A=(1/2)rr(theta) which is simplified to
Click here to see answer by Alan3354(1178) |
Question 163915: find the volume of a frustum of a cone with bases of radii 5cm and 19cm. The height of this frustum is 6cm.: find the volume of a frustum of a cone with bases of radii 5cm and 19cm. The height of this frustum is 6cm.
Click here to see answer by orca(336) |
Question 163219This question is from textbook Discovering Geometry - An Inductive Approach
: In the problem I'm working on, I have to draw a scalene triangle with set side lengths, but the book doesn't tell me the angle measures, which would make the problem a lot easier. We haven't learned a formula to calculate angles from side lengths in class yet, so I'm wondering if you know, because I've encountered problems like this before, and wondered if there's an easier way. Thanks for your help!This question is from textbook Discovering Geometry - An Inductive Approach
: In the problem I'm working on, I have to draw a scalene triangle with set side lengths, but the book doesn't tell me the angle measures, which would make the problem a lot easier. We haven't learned a formula to calculate angles from side lengths in class yet, so I'm wondering if you know, because I've encountered problems like this before, and wondered if there's an easier way. Thanks for your help!
Click here to see answer by scott8148(2719) |
Question 162533: The length of a rectangle is 4 times the width. The perimeter of the rectangle is 120. What are the length and width of the rectangle?: The length of a rectangle is 4 times the width. The perimeter of the rectangle is 120. What are the length and width of the rectangle?
Click here to see answer by checkley77(3380) |
Question 161749: My husband and I are building a semi-circular wall in our landscaping. We have 12x12 inch blocks that we need to cut in order to place them on top of the wall. If the radius of our semi-circle is 78 and 5/16 inches at what angle should we cut each of our blocks to form the semi-circle? : My husband and I are building a semi-circular wall in our landscaping. We have 12x12 inch blocks that we need to cut in order to place them on top of the wall. If the radius of our semi-circle is 78 and 5/16 inches at what angle should we cut each of our blocks to form the semi-circle?
Click here to see answer by scott8148(2719) |
Question 161674: 1) there is a circle with a 24" diameter.
2) There is a line drawn across the circle six inches from the bottom.
3) What is the area under the line?
4) figure this problem out without using the formula to find the area under a curve.
5 Good luck!: 1) there is a circle with a 24" diameter.
2) There is a line drawn across the circle six inches from the bottom.
3) What is the area under the line?
4) figure this problem out without using the formula to find the area under a curve.
5 Good luck!
Click here to see answer by gonzo(428) |
Question 161357: useing a mid-point formula Line AB is located (-5,0) and (-1,3).what slope is
a) 4/3
b) 2/4
c) 3/4
d) 4/2: useing a mid-point formula Line AB is located (-5,0) and (-1,3).what slope is
a) 4/3
b) 2/4
c) 3/4
d) 4/2
Click here to see answer by checkley77(3380) |
Question 160470: Write the equation of a parallel line to y=16x-14 going through (2,-2).: Write the equation of a parallel line to y=16x-14 going through (2,-2).
Click here to see answer by checkley77(3380) |
Question 159400: What is the formula to find out what the some of all of the interior angles in a non regular pentagon? : What is the formula to find out what the some of all of the interior angles in a non regular pentagon?
Click here to see answer by vleith(1156) |
Question 159312: Need help on the following problem please?
problem:
determine which variable you will substitute for and rewrite as an equation using one variable?
x + y =6
2x - 3y =9 : Need help on the following problem please?
problem:
determine which variable you will substitute for and rewrite as an equation using one variable?
x + y =6
2x - 3y =9
Click here to see answer by gonzo(428) |
Question 159125: Im having a brain fart. Im trying to solve 3+9+27+..., find S10
tn=3+(10-1)(is 3 to power of 3?) I can't remember the rule for multiplying.Please help!
t10=12(?)
t10=
s10= [n(t1+tn)/2]
: Im having a brain fart. Im trying to solve 3+9+27+..., find S10
tn=3+(10-1)(is 3 to power of 3?) I can't remember the rule for multiplying.Please help!
t10=12(?)
t10=
s10= [n(t1+tn)/2]
Click here to see answer by Alan3354(1178) |
Question 158809: Hi,
My question is about finding a measure in simplest form. I have to use the distance formula. The coordinates are (-5,3) and (3,4. The answer I got for that question was 65. Now I have to simplify the answer and I'm not sure what to do.
Thank You: Hi,
My question is about finding a measure in simplest form. I have to use the distance formula. The coordinates are (-5,3) and (3,4. The answer I got for that question was 65. Now I have to simplify the answer and I'm not sure what to do.
Thank You
Click here to see answer by checkley77(3380) |
Question 158756: I know the formulas for finding the surface area of a sphere and the volume of a sphere. I need to use these formulas to find out the algebraic formula for the ratio of a sphere's surface area to its volume AND show logical steps on how I got it.: I know the formulas for finding the surface area of a sphere and the volume of a sphere. I need to use these formulas to find out the algebraic formula for the ratio of a sphere's surface area to its volume AND show logical steps on how I got it.
Click here to see answer by scott8148(2719) |
Question 158186: Can you help me figure this out. I am trying to help my daughter learn some of this and have lost most of what I learned.
The coordinates of A, B, C, D are 8, -9, 17 and -14 respectively. Determine AB, BC, CD, and AD.: Can you help me figure this out. I am trying to help my daughter learn some of this and have lost most of what I learned.
The coordinates of A, B, C, D are 8, -9, 17 and -14 respectively. Determine AB, BC, CD, and AD.
Click here to see answer by gonzo(428) |
Question 157889: Find the area under the normal distribution curve to the right of z = –1.03.
Can you explain this for me?: Find the area under the normal distribution curve to the right of z = –1.03.
Can you explain this for me?
Click here to see answer by Fombitz(1740) |
Question 156958: Write a rule for the nth term of the geometric sequence:
a3=180,a6=38,880: Write a rule for the nth term of the geometric sequence:
a3=180,a6=38,880
Click here to see answer by scott8148(2719) |
Question 141787: A circle centered at the point of origin has a radius of 10. If the point (10,0) is rotated 120 degrees counter-clockwise, determine the coordinates of the new point in exact radical form.: A circle centered at the point of origin has a radius of 10. If the point (10,0) is rotated 120 degrees counter-clockwise, determine the coordinates of the new point in exact radical form.
Click here to see answer by Alan3354(1178) |
Question 155963: how to write these word problems into numbers?
1)two hundred seventeen thousand,eight
2)one hundred thousand,fifty-nine
3)nineteen hundred : how to write these word problems into numbers?
1)two hundred seventeen thousand,eight
2)one hundred thousand,fifty-nine
3)nineteen hundred
Click here to see answer by Alan3354(1178) |
Question 155446: How do you begin solving a problem like this --
1. A room measures 20' by 30' by 9' (length x width x height).
2. How many boxes measuring 18 inches x 24 inches by 12 inches will fit in the room?: How do you begin solving a problem like this --
1. A room measures 20' by 30' by 9' (length x width x height).
2. How many boxes measuring 18 inches x 24 inches by 12 inches will fit in the room?
Click here to see answer by jim_thompson5910(9162) |
Question 155127: The state of colorado is almost perfectly rectangular with it's north border 111 miles longer than it's west border. If the state encompasses 104,000 square miles, estimate the dimensions of colorado. Round your anwser to the nearest mile.
I was thinking that the equation was x times (x+11)=104,000 but i couldn't figure it out.: The state of colorado is almost perfectly rectangular with it's north border 111 miles longer than it's west border. If the state encompasses 104,000 square miles, estimate the dimensions of colorado. Round your anwser to the nearest mile.
I was thinking that the equation was x times (x+11)=104,000 but i couldn't figure it out.
Click here to see answer by stanbon(18718) |
Question 154402: I need to find the surface area of a christmas tree I made for my summer project. The cone shape is 22 inches tall and has a diameter of 7.5 inches. There is also a base for the cone shape. I also have a cylinder shape for the tree trunk wich is 3 inches in diameter and 5 inches in height. Please show me the calculations. I am using 2TTR(R+H) for both shapes but I do not think it is right and then I am not sure how to do the base of the cone.: I need to find the surface area of a christmas tree I made for my summer project. The cone shape is 22 inches tall and has a diameter of 7.5 inches. There is also a base for the cone shape. I also have a cylinder shape for the tree trunk wich is 3 inches in diameter and 5 inches in height. Please show me the calculations. I am using 2TTR(R+H) for both shapes but I do not think it is right and then I am not sure how to do the base of the cone.
Click here to see answer by ankor@dixie-net.com(4484) |
Question 153974: We need to figure out the surface area of a room so we can figure out how much paint to use and howmuch is it going to cost: We need to figure out the surface area of a room so we can figure out how much paint to use and howmuch is it going to cost
Click here to see answer by Fombitz(1740) |
Question 153146This question is from textbook Geomertry
: The Fibonacci sequence consists of the pattern 1,1,2,3,5,8,13...
What is the ninth term in the pattern?This question is from textbook Geomertry
: The Fibonacci sequence consists of the pattern 1,1,2,3,5,8,13...
What is the ninth term in the pattern?
Click here to see answer by stanbon(18718) |
Question 152979: derive the formula of the following:
1. rectagular prism
2. triangular prism
3. cylindrical prism
4. pyramid: derive the formula of the following:
1. rectagular prism
2. triangular prism
3. cylindrical prism
4. pyramid
Click here to see answer by Fombitz(1740) |
Question 152917This question is from textbook College Algebra
: This problem was given by the instructor in a seperate workbook & is not in my book. I take this class via Distance Learning at UGA, so I don't really see a teacher.
"A closed rectangular box with a surface area of 28 sq. inches is to be designed. The design of the box requires that the length of the box is 2 times the width, and the depth must be 4 inches. Find the length and width of the box."
I have tried to fit this into the formula for surface area, but I just can't figure this out.This question is from textbook College Algebra
: This problem was given by the instructor in a seperate workbook & is not in my book. I take this class via Distance Learning at UGA, so I don't really see a teacher.
"A closed rectangular box with a surface area of 28 sq. inches is to be designed. The design of the box requires that the length of the box is 2 times the width, and the depth must be 4 inches. Find the length and width of the box."
I have tried to fit this into the formula for surface area, but I just can't figure this out.
Click here to see answer by scott8148(2719) |
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