Question

A cylindrical metallic pipe is 21 cm long. The difference between the outside and inside curved surface is 66 cm2. If the pipe is made up at 148.5 cm2 at metal. Find the outer and inner radius of pipe.

Answer 1

it is so simple you need to do hard work for better study and then you will solve this question easily.:-)
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Answer is 129cm2.
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HOPE IT HELPS YOU:-D
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