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1) A road roller takes 750 complete revolutions to move once over to level a road, if thediameter of a road roller is 84cm and length is 1m, find the area of road. |
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Answer» Step-by-step EXPLANATION: Answer Area of road =750× area covered in 1 revoluation =750× lateral SURFACE area of cylinder =750×2πrh Given, d=84cm⇒r=42cm→ 100 42 m h=1m =750×2× 7 22 x100 42 ×1 = 100 1500×132
=1980m 2please do follow |
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