A road roller takes 750 complete revolutions to lecel a road once. find the area of road, if the diameter is 84cm and length is 1 m.
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1
the area of road should be 1980 meter square.
Vivek10092004:
yes
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3
In one revolution, the roller will cover an area equal to its lateral surface area.
Thus, in 1 revolution, area of the road covered = 2πrh
= 2×22/7×42×100cm
=26400cm square
In 750 revolutions, area of the road covered
=750×26400
= 19800000 Cm square
Thus, in 1 revolution, area of the road covered = 2πrh
= 2×22/7×42×100cm
=26400cm square
In 750 revolutions, area of the road covered
=750×26400
= 19800000 Cm square
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