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Question
In making 1000 revolutions, a wheel covers 88 km. The diameter of the wheel is
Options
14 m
24 m
28 m
40 m
Solution
28 m
Distance covered by the wheel in 1 revolution`=((88xx1000)/1000) "m'`
= 88 m
We have:
Circumference of the wheel = 88 m
Now, let the diameter of the wheel be d m.
Thus, we have:
πd = 88
`=>22/7xx"d"=88`
`=> "d" =(88xx7/22)`
⇒ d = 28 m
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