BD Merit - Freelancing, BCS, Bank, Primary, Admission, NTRCA

1 . A wheel makes 1000 revolutions in covering a distance of 88 km. The diameter of the wheel is---

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Answer: Option A

Explanation:

A distance equal to the circumference of the wheel is covered in each revolution.

So, 1000 x circumference = total distance

or, 1000 x 2πr = 88000 [in meter]

or, 2r = 88000 / (1000 x π )

or, diameter = 28 m