Question

Find the total surface area of an iron pipe which is 28cm lon B if the thicknens of the pipe is 1c . outer diameter is 13cm .​

Answer 1

Answer:

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

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

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

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

=2187.43 cm2

hope it helps

tq./,

Step-by-step explanation: