A wheel makes 1000 revolutions in covering a distance of 88 km Find the radius of the wheel ........

Quantitative Aptitude ( CCS) Mensuration 2D

A wheel makes 1000 revolutions in covering a distance of 88 km. Find the radius of the wheel.

Distance covered in one revolution = 88×1000/1000= 88m.
2πR²=88 ⇒2×22/7×R=88
⇒R=88×7/44
=>R=14

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