Find the distance covered by a tyre of a car of radius 28cm in 1000 revolutions.
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circumference of circle = 2πr
=2×22/7×28
=2×22×4 ( we devide 28 by 7 so we get 4 )
=176 cm
the distance covered = 1000 × 176
= 176000cm
=176 km
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