Question

A theme park uses cylindrical pillars to support a roller coaster. Each pillar has a diameter of
4
feet and a height of
15
feet.



What is the volume of one pillar to the nearest cubic foot? Use
3.14
for
π
.



A.
188
cubic feet

B.
754
cubic feet

C.
1
,
413
cubic feet

D.
3
,
014
cubic feet

Answer 1

Volume = πr^2h. Radius = 4/2 = 2 ft, so

V = 3.14 × (2^2) × 15 = 3.14 × 4 × 15 = 3.14 × 60 = 188.4 ≈ 188 cubic feet.

Answer: A. 188 cubic feet.