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Use `pi=22/7`
48 मी. लम्बे, 16.5 मी. चौड़े तथा 4 मी. गहरे गड्ढे के भाग के मिट्टी में भरा जा सकता है जो 4 मी. व्यास तथा 56 मी. लम्बी बेलनाकार सुरंग से प्राप्त होती है?
A. `1/9`
B. `2/9`
C. `7/9`
D. `8/9`

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Best answer
Correct Answer - B
सुरंग का आयतन
`=pixxr^(2)xxH`
`=22/7xx4/2xx4/2xx56=704m^(3)`
खाई का आयतन `=48xx16.5xx4=3168m^(3)`
अभीष्ट भाग
`=704/3168=2/9`

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