35. The diameter of a roller, 1 m long, is 84 cm. If it takes 500 complete
revolutions to level a playground, the area of playground
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Answer:
Step-by-step explanation:
Radius of the roller, R = 42 cm and its length, h = 100 cm.
Area covered by the roller in 1 revolution
=2πRh=(2×277×42×100)cm2=26400cm2
Area covered by the roller in 500 revolutions
=(26400×500100×100)m2=1320m2
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