the exterior diameter of an iro pipe is 25 cm and it is one cm thick .fi nd the whole surface area of the pipe if it is 21 cm long

Asked by leya mathews | 12th Feb, 2011, 03:16: PM

Expert Answer:

Dear Student,
Here is the solution:
R = external radius
r= internal radius
h= length of the pipe
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Answered by  | 13th Feb, 2011, 11:11: AM

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