the diameter of a road roller 120 Cm long is 84 cm if it takes 500 complete revolution to level a playground determine cost of levelling it at the rate of 30 paise per square metre
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Step-by-step explanation:
r=60
h=84
C Surface area of roller=2×22/7 ×60×84
=44×720
=28880cm^2
=28880×500
=1444000
cost of levelling =1444000×30
=43320000
=433200 rupees
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