Questions on Geometry: Area and Surface Area answered by real tutors!

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Geometry: Area and Surface Area

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Question 175498: What is the altitude on a triangular prism?
Click here to see answer by actuary(84)

Question 175518: How do you find the area of base and volume on a pyramids?
Click here to see answer by solver91311(5072)

Question 176410: I am trying calculate the surface area of a series of hills for some re-vegetation work. I need a good formula as many of the hills are different sizes. One hill example: 40 ft wide by 30 ft long by 3 ft tall with a 3:1 slope. I am neglecting the real world variation in terrain and treating the hill as a 3D drawing.
Click here to see answer by solver91311(5072)

Question 176597: An error has been made when measuring the internal diameter of a large drain pipe. The measurement is 5% too large. If this measurement is used to calculate the cross sectional area of the pipe calculate
A) the percentage error that will occur compared to the true area
B) the true area of the pipe when the incorrect measured diameter was 796mm. Give your answer in m^2 to 5 s.f

Area=πr^2 or π d^2/4

C) And also solve the problem using the binominal theorem to the degree of accuracy stated.

^2 means squared
Click here to see answer by Mathtut(3670)

Question 176816: Find the surface area of a right rectangle prism 14.5cm x 20.7cm x 10.2cm.
Click here to see answer by Alan3354(6079)

Question 176868: Telephoto lens. Use the formula (1/f=1/o+1/i) to find the image distance i for an object that is 2,000,000 mm from a 250 mm telephoto lens.
Click here to see answer by Mathtut(3670)

Question 177201: A worker is to paint the walls of a square room 7.90 ft high and 18.0 ft along each side. What surface area in square meters must she cover?
Click here to see answer by stanbon(26273)

Question 177463: The surface area S of a right prism is given by
S=2B+PH
Where B is the area of the base P is the perimeter of the base and H is the hight of the the prism
Click here to see answer by stanbon(26273)

Question 177466: Here it is again sorry solve for p thank you

The surface area S of a right prism is given by
S=2B+PH
Where B is the area of the base P is the perimeter of the base and H is the hight of the the prism: The surface area S of a right prism is given by
S=2B+PH
Where B is the area of the base P is the perimeter of the base and H is the hight of the the prism
slove for P
Click here to see answer by stanbon(26273)

Question 178672This question is from textbook california geometry
: This question is from textbook california geometry

Click here to see answer by Mathtut(3670)

Question 178820: I need help finding the perimeter of a regular hexagon which is made up of equilateral triangles...of course 60 degree angles. This is all the info. I was given. I know how to find perimeter but this makes no sense to me!
Thank You for your help with this problem,
Kate
Click here to see answer by jim_thompson5910(13789)

Question 179215: A wall that is 12 feet wide and 8 feet high must be painted. There are 2 windows measuring 3 by 5 feet on the wall. There is also a door that is 4 by 7 feet. What percent of the wall can be painted?

Click here to see answer by checkley75(3666)

Question 179213: I need help solving this question: A cylinder tank has a diameter fo 20 inches and a height of 30 inches. In it is a solid cylinder that has a diameter fo 12 inches and a height fo 30 inches. If the tank is filled with water, what percent of the original tank can be used for water?

Click here to see answer by nerdybill(2446)

Question 179334: A brick is 8 inches long, 3 inches wide, 2 inches thick. What is the brick's surface area?
Click here to see answer by Mathtut(3670)

Question 179429: A= 2prh + 2pr(sqaured) this is the formula for the surface area of circular cylinder. i want to know the height. p stands for pie/ the r is squared in the second half of the problem
i got to A-2pr squared = 2prh
when i divided by 2pr i dont understand why you get h= A/2pr - r
wouldn't the 2pr cancel each other out. please help
Click here to see answer by stanbon(26273)

Question 179829: How many square feet of fencing material do you need to make an open cylinder 4 feet across and 4 feet high?
Click here to see answer by nerdybill(2446)

Question 179864: Find the area of the triangle with vertices at (-3,5),(-3,-5),(5,1)
Click here to see answer by HyperBrain(694)

Question 180143: Graph the line y= 2x+5.
Click here to see answer by Mathtut(3670)

Question 180200This question is from textbook glencoe Geometry
: find the radius of a cone given the surface area and slant height. round to the nearest tenth T=359ft^2 , l=15 ftThis question is from textbook glencoe Geometry

Click here to see answer by ankor@dixie-net.com(6693)

Question 180305: The radius of circle O and the measure of central angle O are given.
r=6; measure of angle O=30
a) Find the exact area of the sector determined by the central angle.
b) Find the exact length of the intercepted arc.
Click here to see answer by Alan3354(6079)

Question 180198This question is from textbook glencoe Geometry
: the surface area of a cone is 293.2 square feet and the radius is 6.1 feet what is the slant heightThis question is from textbook glencoe Geometry

Click here to see answer by elima(1433)

Question 180473: which is greater the total volume fo hree balls that each hace diameter of 3 in. ofthe volume of one ball that has a diameter fo 8 in?
Click here to see answer by Mathtut(3670)

Question 181581: What is the area of a circle whose radius is 4cm?
Click here to see answer by vleith(1977)

Question 181663: A garden is 3 feet by 5 feet. How much will each side have to be increased in order to increase the area by 20 feet squared?
Click here to see answer by ankor@dixie-net.com(6693)

Question 182247This question is from textbook Geometry

: How do I do the area for the yellow and blue regions? I found the areas of each of the triangles but I don't know what do from there. Please help!This question is from textbook Geometry

Click here to see answer by solver91311(5072)

Question 182920: Trying to find the square footage of a 32,000 gallon tank
Length = 25feet
Diameter = 10feet
Click here to see answer by solver91311(5072)

Question 183197: How do I find out the surface area of a box that was 0 inches long, 3 inches high, and 2 inches wide. Also another one (for the same equation) was that she had a section of wrapping paper that was 48 inches long and 12 inches wide. Did she have enough. if yes how much left over did she have.. if no ho wmuch more did she need.
Click here to see answer by lizard(7)

Question 183510: Please help. The length of each side of a cube is increased by 20%, what is the % increase in the surface area of the cube?
Click here to see answer by MissionPossible(18)

Question 184099: i dont nderstand it can you work one out for me???
Click here to see answer by solver91311(5072)

Question 184114: A square field has 5m added to its length and 2m added to its width.The field then had an area of 130m^2.Find the length of the side of the original field.
Click here to see answer by vleith(1977)

Question 184146: find the surface area of the rectangular prism 9in.x 9in.x 12in
Click here to see answer by Alan3354(6079)

Question 184477: A box is 12 inches wide, 16 inches long and 6 inches high. How many square inches of paper would be needed to cover it on all sides?
Click here to see answer by checkley77(7049)

Question 184501: A company wants to make cardboard boxes that are 15 inches long,12 inches wide, and 6 inches high. How many square inches of cardboard will the surface of the box have? I forgot the formula. All i know is-
Surface area= 2(?*?)+2(?*?)+2(?*?)

Click here to see answer by jim_thompson5910(13789)

Question 184498: A company wants to make cardboard boxes that are 15 inches long,12 inches wide, and 6 inches high. How many square inches of cardboard will the surface of the box have? I forgot the formula. All i know is-
Surface area= 2(?*?)+2(?*?)+2(?*?)

Click here to see answer by jim_thompson5910(13789)

Question 184551: let h=3.75cm,w=4.5cm,l=11.5cm
Click here to see answer by checkley77(7049)

Question 184694: which could be the lengths of the sides of the squares if the triangle formed below is a right triangle.
ANSWERS:
3,4,6
5,12,14
8,15,17
7,23,25
Click here to see answer by edjones(3296)

Question 184417This question is from textbook

: a rectangular pool is 3 times as long as it is wide and is surrounded by a deck 2.5 m wide. Find the dimensions of the pool if the area of the deck is 265m2(that is supposed to be m squared) I need step by step help thanksThis question is from textbook

Click here to see answer by ankor@dixie-net.com(6693)

Question 184845: Find the area of an equilateral triangle with a height of 6 square root 3.
Click here to see answer by edjones(3296)

Question 184969: The surface area of a cube is 60cmsquare
Work out volume of the cube.
I have to work this out without using calculator.
I divided 60 by 6 to give area of one side = 10 cms square.
I know that volume of cube is l x w x h.
Is there a special formula for the answer
Thank you
Click here to see answer by eperette(173)

Question 185153: the exact area of a circle with a diameter 32 in
Click here to see answer by vleith(1977)

Question 185154: A 5-ft-diameter round table is in a 12 ft-by-15 ft room.

What is the area covered by the table? Round to the nearest unit

Click here to see answer by checkley77(7049)

Question 185245: how do you find the volume of a cube

Click here to see answer by stanbon(26273)

Question 185338: Compute area of the convex quadrilateral having vertices (-1,3) (2,0) (2,-1) (-5,-1)
Click here to see answer by solver91311(5072)

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