radius of a road roller is 35 cm and is 1 metre long if it takes two hundred to level a playground and the cost of levelling the ground at the rate of 3 rupees per square metre
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Answer:
LSA = 2×PIE×R×H
= 2×22/7 ×0.35×1 = 2.2sq.m
area of road = 2.2×200= 440sq.m
cost of levelling = 440×3
= 1320 rupees
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