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A wheel completes 2000 revolutions to cover the 9.5 km distance. Then the diameter of the wheel is

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A wheel completes 2000 revolutions to cover the 9.5 km distance. Then the diameter of the wheel is 

(A) 1.5 m

(B) 1.5 cm

(C) 7.5 cm

(D) 7.5 m  

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1 Answer

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Best answer

The correct option-   (A) 1.5 m 

Explanation:-

n = 2000, distance = 9500 m

Distance covered in ‘n’ revolutions = n(2π r)

= nπD

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