a road roller takes 750 complete revolution to more once over to level a road .if the diameter of road roller is 84 cm and length is 1m then area of the road.
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,,,,,,,,,,,,,,,,,,,,,,, ,,,,,19800000/10000
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yadavAnkit1:
thanks
mst wlcm.. :)
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heya.....here is the solution...
Given...
diameter=84cm
radius=42cm
height=1m
=100cm
C.S.A of roller= 2πrh
2×22/7×42×100
44×600
26400cm².....area of roller
area of 1 revolution=area of 1cm² of road
area of 750 revolution= total area of road
Area of road=750×26400
19800000cm²
Given...
diameter=84cm
radius=42cm
height=1m
=100cm
C.S.A of roller= 2πrh
2×22/7×42×100
44×600
26400cm².....area of roller
area of 1 revolution=area of 1cm² of road
area of 750 revolution= total area of road
Area of road=750×26400
19800000cm²
ans.1980 meter square
change it into m
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