Math (PreAlgebra) 8thG
posted by LovelyDec0y on .
Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number.
V = (4/3)3.14(r)^3 = (formula)
I don't know what to do about the fraction, four over three (4/3), in the formula.... Show me how to do this please?

V = ( 4 / 3 ) * pi * r ^ 3
V = ( 4 * pi * r ^ 3 ) / 3
V = 4 * 3.1416 * 10 ^ 3 / 3
V = 4 * 3.1416 * 1000 / 3
V = 12566.4 / 3
V = 4188.8 ft ^ 3
Round to the nearest whole number
V = 4189 ft ^ 3 
Multiply:
4/3* 3.14 * 10^2 =
1256/3 =
419 ft^3