A cylindrical steel water pipe has a length of 12 feet and a radius of 1.5 feet. Which of these best represents the volume of this length of pipe?

A

57 ft3

B

85 ft3

C

113 ft3

D

170 ft3

Answer: B. 85 ft³

Step-by-step explanation:

Since the shape of the steel water pipe is cylindrical, we would determine the volume of this length of pipe by applying the formula for finding the volume of a cylinder. It is expressed as

Volume = πr²h

Where

π is a constant whose value is 3.14

r represents the radius of the steel pipe.

h represents the height of the given length of pipe.

From the information given,

Height = 12 feet

Radius = 1.5 feet

Volume = 3.14 * 1.5² * 12 = 84.78

Approximately 85ft³