# The diameter of a roller is 84cm and its length is 120cm . It takes 500 complete revolution to move once over to level a playground . the area of the playground in metre square is:-

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by kpsingh

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by kpsingh

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r=0.42 m

length=120 cm=1.2 m

area of the roller=πr²=π*0.1764=0.5544

total area=0.5544*500=277.2 m²

The Brainliest Answer!

here,

2*22/7*42*120=44*6*120=31680

the no.of revolutions taken to level the playground once=500

therefore Ar. of the playground=500*31680=15840000cm^2 /1584 m^2