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
