Question

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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Answer 1

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