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  • A right circular cylindrical tunnel of diameter 4 m and length 10 m is to be constructed from a sheet of iron. The area of the iron sheet required is:

A right circular cylindrical tunnel of diameter 4 m and length 10 m is to be constructed from a sheet of iron. The area of the iron sheet required is:

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eginarrayl extCurved surface area of cylinder.\ s=2pi rl=pi dl\ extGiven, l=10 m & d=4 m\ s=pi imes4 imes10 m^2=40pi m^2\ endarray

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Deependra Verma

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