A cylinder roller is of length 2m and diameter is 84 cm.find the number of revolution it has to make to cover an area of 7920m cube
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Answered by
3
Given, length = 2m = 200 cm
Radius of the roller = 84 cm = 42 cm
Surface area = 2 pi r h
= 2 * 22/7 * 42 * 200
= 52800 cm^2
= 5.28 m^2
Number of Revolutions = 7930/5.28
= 1501
Hope this helps!
Radius of the roller = 84 cm = 42 cm
Surface area = 2 pi r h
= 2 * 22/7 * 42 * 200
= 52800 cm^2
= 5.28 m^2
Number of Revolutions = 7930/5.28
= 1501
Hope this helps!
suvosi:
Area is 7920 not 7930
Answered by
0
Height = 2m
Radius = 0.84/2 = 0.42 m
Area= 7920 m cube
Area = 2pi rh
= 2x 22/7 x 0.42 x 2 =52.8 m cube
No.of revolutions it will make = 7920/ 52.8 = 30 revolutions it will make
Radius = 0.84/2 = 0.42 m
Area= 7920 m cube
Area = 2pi rh
= 2x 22/7 x 0.42 x 2 =52.8 m cube
No.of revolutions it will make = 7920/ 52.8 = 30 revolutions it will make
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