Math, asked by reshavraj003016, 4 months ago

A 20 m long iron pipe has an exterior diameter of 25 cm. If the thickness of the pipe is 1 cm, find the internal curved surface area of the pipe.

Answers

Answered by monikakumharia6

0

Answer:

3167cm2

Step-by-step explanation:

TSA of pipe = 2πh(R+r)+2π(R2-r2)

= 2*22/7*20(12.5+11.5)+2*22/7 [(12.5)2 - (11.5)2]

= 44*480 whole divide by /7 +44*24 whole divide by 7

=21120/7+1056/7=22176/7

= 3167 cm2.

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