Asteel pipe is 55cm long and has an inside radius of 8cm and an outside of 10cm. what volume of steel is needed to manufacture this length of pipe?

The volume of steel needed to manufacture the 55cm pipe is
11,052.80 cm³

Given:
length or height = 55 cm long
inner radius = 8 cm
outer radius = 10 cm
volume of pipe = ?

Pipe volume is computed by multiplying pi with radius raised to the 2nd power and by the height of the pipe.

Pipe volume = π r² h
let π = 3.14
radius used is the inner radius of the tube = 8cm

Pipe volume = 3.14 * (8cm)² * 55cm
Pipe volume = 3.14 * 64 cm²* 55 cm
Pipe volume = 11,052.80 cm³

Ithink is a. true, but not sure