ICSE Class 8 Answered
A road roller has a diameter 0.7 m and it's width 1.2m .Find the least number of revolutios that the roller must take in order to level a playground of size 120m ×44m
Asked by kk564025 | 03 Feb, 2020, 08:45: PM
Expert Answer
Diameter = 0.7 m
Radius of the roller (r) = 0.7/2 = 0.35 m
Width of the roller (h) = 1.2 m
Curved surface area of the roller = Curved surface area of cylinder =
Area lavelled by roller = 120m x 44m = 5280 m2
Answered by Renu Varma | 04 Feb, 2020, 10:12: AM
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