Question

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To cover a distance of 10 km, a wheel rotates 5000 times. Find the radius of the wheel.​

Answer 1

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In 5000 rotations, the distance covered

= 10 km = 1000000 cm.

r = 31.82 cm approx.

Answer 2

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Total distance covered = 10 km,

and we have to find out the radius of the circle.

Circumference of the wheel = Distance covered in 1 rotation

= 2πr.

In 5000 rotations, the distance covered = 10 km = 1000000 cm. r = 31.82 cm approx.