a cylinder has a diameter of 10 inches and a height four times its radius. what is its volume?
If the diameter is 10, then the radius = 5 ..... and the height is 4 times this = 20
The volume is
pi * radius^2 * height =
pi * 5^2 * 20 =
pi * 25 * 20 =
500 pi cubic units = about 1570.8 cubic units
