Question

A storage container for oil is in the shape of a cylinder with a diameter of 10 ft and a height of 17 ft. Which measurement is closest to the volume of the storage container in cubic feet?

a. 534

b. 1335

c. 691

d. 1696

Answer 1

B. 1335

Explanation:

The formula for the volume of a cylinder is V = base x height = pi x r^2 (area of circle) x height.

r (radius) = 1/2 diameter = 1/2(10ft) = 5 ft

height = 17ft

area of the base = pi x (5 feet)^2 = (25 x pi) ft^2

putting all together, V = (25 x pi)ft^2 x 17 feet = 1335.177 ft^3

But if you don't have a calculator, just remember that pi is around 3.14. Using 3.14 as pi gives 1334.5, so also close enough.