Question

A hollow cylindrical pipe is 28m long. Its inner and outer diameters are 6cm and 12 cm,respectively. Find the volume of the metal used in making the pipe

Answer 1

Answer:

Step-by-step explanation:

Height =28m =2800cm

Inner diameter=6cm

Outer diameter=12cm

Thickness of pipe= 12-6 =6cm

Volume=π r(square,2)h

22/7*3*3*2800 cm3

79200cm3