# Road roller makes 5000 revolutions in covering 22 kilometres find the radius of the roller

2
by kate1

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by kate1

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This means circumference * 5000 revolutions = 22 km

2πr*5000=22*1000m

44/7*r*5000= 22000 m

r = 22000*7/44*5000

r = 0.7 m

r = 70 cm

Hope this helped u.

Distance covered =22 Kms

∴

2*22/7*r*5000=22*1000

44/7*r*5000=22000

r=22000*7/44*5000

r=0.7m

∴r=70cms