Question
+Find the diameter of a wheel that makes 113 revolutions to go 2 km 26 decametres.
Answer: Option B
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Let the diameter of the wheel be d metres.
Distance covered in 1 revolution = `(pi d)` metres
Distance covered in 113 revolutions = `(113 pi d)` m
`:.` `113 xx 22/7 xx d = 226 xx 10`
`hArr d = (226 xx 10 xx 7/22 xx 1/113)` m.
`hArr d = 6 4/11`m
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