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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 February 2011, 3:16 PM
Answered by Expert
Answer:
Dear Student,
Here is the solution:
R = external radius
r= internal radius
h= length of the pipe
 
Regards
Team Topperlearning
Answered by Expert 13th February 2011, 11:11 AM
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