Q. 135.0( 2 Votes )

# Road roller makes 5000 revolutions in covering 22 kilometer’s. Find the radius of the roller.

Answer :

Given:

Distance covered by roller = 22 km

Revolutions made by roller = 5000

let the radius of the roller be x

Circumference of roller = 2πr

According to given conditions

5000 × 2πr = 22000

r = 70 cm

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