A road rollertakes 750 revolutions to move once over to level a road.find the area of the road if the diameter of the road is 54cm and the length is 1m
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Answer:
Length of roller = 1m = 100cm
Circumference of roller = π x D = 22/7 X 54 = 1188/7cm
Length of road = 1188/7x 750 = 127285.71 cm
Width of road = length of roller = 100 cm
Area of road = 127285.71 x 100 = 12728571 cm²
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Total revolution =750
Diameter=54 cm radius=d/2=27cm
Length in cm=100cm
The Curved surface area of the road roller = 2*pie*r*h
=2*22/7*27*100
=16971.42857…let it be 16971.5 (approx)
Total area of road= 750*16971.5
=12728625cm^2
In m^2=12728625/10000
=1272.8625m^2 Ans.
Happy to help
Diameter=54 cm radius=d/2=27cm
Length in cm=100cm
The Curved surface area of the road roller = 2*pie*r*h
=2*22/7*27*100
=16971.42857…let it be 16971.5 (approx)
Total area of road= 750*16971.5
=12728625cm^2
In m^2=12728625/10000
=1272.8625m^2 Ans.
Happy to help
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