A wheel makes 1000 revolutions in covering a distance of 88 km. Find the radius of the wheel.
Correct Answer: Option A
Distance covered in one revolution \(\frac{88\times1000}{1000}\) = 88m.
\(2\mathrm{πR}^2=88\;\;\Rightarrow2\times\frac{22}7\times\mathrm R=88\;\;\Rightarrow\mathrm R=88\times\frac7{44}\)
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