A road roller takes 900 revolutions to move once over a cricket playground. Find out the area of the playground if the radius of the roller is 49 cm and the length is 90 cm. Plz answer this.
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In 1 revolution, area of road covered = 2πrh
=2×722×63×2.5=990 m2
Therefore,
Area covered in 900 revolutions = 900×990=891000 m2
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