the diameter of a roller is 84cm and its length is 120cm. it takes 500 complete revolutions to move once over to level a playground. find the area of playground in m
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Area of playground = 500 × CSA of roller
= 500 × 2 × 22÷7 × 42 × 120
= 500 × 31680
= 15840000 cm ^2
= 1584 m^2
= 500 × 2 × 22÷7 × 42 × 120
= 500 × 31680
= 15840000 cm ^2
= 1584 m^2
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