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CBSE Class 9 Answered

What length of tarpaulin 3 m wide will be required to make a cylindrical tent open at both the ends, of height 3 m and base radius 7 m?
Asked by Topperlearning User | 12 Oct, 2017, 09:04: AM
answered-by-expert Expert Answer

begin mathsize 12px style Radius space of space the space cylindrical space tent space left parenthesis straight r right parenthesis space equals space 7 space straight m Height space of space the space tent space left parenthesis straight h right parenthesis space equals space 3 space straight m Width space of space tarpaulin space left parenthesis straight B right parenthesis space equals space 3 space straight m Let space straight L space be space the space length space of space the space tarpaulin space required. Area space of space tarpaulin space required space equals space curved space Surface space area space of space the space tent straight L space cross times space straight B space equals space 2 πrh straight L space equals space fraction numerator 2 cross times 22 cross times 7 cross times 3 over denominator 7 cross times 3 end fraction straight L space equals space 44 space straight m end style

Answered by | 12 Oct, 2017, 11:04: AM

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