Question

find the total surface area of an iron pipe which is 28cm long ,if the thickness of the pipe is 1 cm and outer diameter is 13 cm​

Answer 1

Heyo Buddy!!

apply this formula n you'll get your answer

2Rh + 2rh + 2(R2 - r2)

= 2h(R + r) + 2[(R + r) (R - r)]

= 2(R + r) (h + R - r)

HOPE THIS HELPS YOU

:)

please mark my answer as a brainliest one as well..

Answer 2

Answer:

2(R+r)(h+R-r)

=2187.43 cm2