A roller takes 750 complete revolutions to move once over a level of road. Find the area of
7
road if the diameter of the roller is 84 cm and length is 1 m.
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Step-by-step explanation:
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Given:
⇒D=84 cm,l=1m
⇒r=42cm
⇒Area of road covered in 1 revolution =2πrl =2×22/7×42×1= 100/264sq m
⇒Area of road covered in 750 revolution =750×(100/264) =1980 sq m
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