Tutors Answer Your Questions about Surface-area (FREE)
Question 751968: An artist wants to make alabaster pyramids using a block of alabaster with a volume of 576 cubic inches. She plans to make each pyramid with a square base area of 3 square inches and a height of 4 inches. At most, how many pyramids can the artist make from the block of alabaster?
Click here to see answer by smartdoctor96(1)  |
Question 758329: Find the area of each of the following.
1. square whose sides are (x+1) in length
2. triangle whose base is 5 1/2 in. and whose height is 2 1/4 in.
For #1, I tried it and got x^2+1
For #2, I got 6 3/16
Click here to see answer by Cromlix(4381)  |
Question 759407: A circular disk is cut from the following square sheet of metal. If each side of the square is 40 cm in length, what is the are of scrap metal when the circular disk is removed? Round your answer to the nearest square centimetre.
Click here to see answer by Cromlix(4381) |
Question 760795: Select the equation for the circle with center at point (2, –5) and a radius of 12.
A.(x - 2)2 + (y + 5)2 = 12 B.(x + 2)2 + (y - 5)2 = 12
C.(x - 2)2 + (y + 5)2 = 144 D.(x + 2)2 + (y - 5)2 = 144
Click here to see answer by kjmg(1) |
Question 761491: A swimming pool is 15 by 30 feet and a consistent 5 feet deep. You are painting the walls and floor of the pool. If a gallon of paint covers 250 square feet, how many gallon cans would you need to buy?
Also you need to fill the pool with water. If 1 cubic foot equals 7.48 gallons of water, how many gallons will it take to fill the pool?
Click here to see answer by Cromlix(4381) |
Question 763110: A page in a school yearbook is 8 1/2 inches by 11 inches. The left margins is 1 inch and the right margin is 2 1/2 inches. The space between the pictures is 1/4 inch. How wide should each picture fit three across the page?
Click here to see answer by KMST(5328)  |
Question 763953: A picture rail needs to go around a room that is 8 ft. wide and 7 ft. long, excluding a window, 2 feet wide. To work out the length of rail needed, would I just need to add the two lengths and two widths together? Explain.
Click here to see answer by stanbon(75887) |
Question 764270: List the data set from the stem and leaf plot
stem------- Leaf
1---------- 3,7
2---------- 1,7,8,8
3-------
4---------- 5,9,9
5---------- 0,3,3,5
6---------- 6,8
7----------
8---------- 0,1,1,3
Click here to see answer by Cromlix(4381) |
Question 764330: A square has four corner points A (lower left corner), B (lower right corner), C (Upper right corner), and D (upper left corner). What is the area of the square, if it measures 5.5cm between points A and B and 5.5cm between points B and C.
Click here to see answer by solver91311(24713)  |
Question 764974: (This is pre cal 11- chapter 2: absolute value and radicals)
Earth approximates a sphere with radius 6370km.
a) The formula for the surface area of a sphere is : SA= 4πr²
To the nearest kilometer, determine the edge length of a cube with the same surface area as Earth.
b) The formula for the volume of a sphere is: V=4/3πr²
To the nearest kilometer, determine the edge length of a cube with the same volume as Earth.
Thank you.
Click here to see answer by stanbon(75887) |
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