diameter of a roller is 98cm and length is 120 cm it take 620 revolution to move once in a playground find the area of the play ground
answer please
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Answer:
d=98cm
r=49cm
l=120cm
area of roller=2πrh
2*22/7*49*120 cm^2
36960cm2
area of play ground = 36960*620
22915200cm2
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