How many times a circular wheel of diameter 56 CM must rotate to go 704 m?

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Solution

Radius of the wheel =diameter/2=56/2= 28 cm
Distance covered by the wheel in one rotation = 2πr
= 2 × 22/7 × 28
= 176 cm
Distance to be covered = 704 m = 70400 cm

Number of rotations of the wheel to cover 35200 cm = 70400/176 = 400

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