a road roller takes 750 complete revolutions at move once over to level a road. find the area of the road if the diameter of the road roller is 84 cm and it's length is 1 m.
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Diameter =84cm
Radius=D/2=84/2=42cm
Heght (length)=1m=100cm
Curved surface area of road roller=2×22/7×42×100=26400cm square units
Area of road=Curved surface area of roadroller ×number of revolution=26400×750=19800000cm^2
In m^2=1980m^2
Radius=D/2=84/2=42cm
Heght (length)=1m=100cm
Curved surface area of road roller=2×22/7×42×100=26400cm square units
Area of road=Curved surface area of roadroller ×number of revolution=26400×750=19800000cm^2
In m^2=1980m^2
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