Question

A steel pipe has an outer radius of 6 cm and an inner radius of 5.6 cm. It has a length of 12 cm.
1) Find the area of the outer curved surface of the pipe.
2) Find the area of the inner curved surface of the pipe.
3) Find the total surface area of the pipe.

Answer 1

Answer:

Given a metal pipe is 77 cm long and inner diameter is 4 cm and outer diameter is 4.4 cm

Then radius of outer side =

2

4.4

=2.2 cm

Then outer curved surface area=2πrh

=2×

7

22

×2.2×77=96.8×11

=1064.80cm

2

hope it helps you