the radius of a roller is 160 cm and its length is 252 cm. the roller takes 1500 complete revolution to level of ground. find the area of ground.
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Given radius = 160cm Then the diameter will be d = 2r = 320cm.
Area of the roller = 2pirh
= 2 * 22/7 * 160 * 252
= 2 * 22 * 160 * 36
= 253440 cm^2.
Area of 1 revolution = Area of roller = 253440 cm^2.
Area of 1500 revolution = 1500 *253440 cm^2
= 380160000 cm^2
Area of the ground = 38016 m^2.
Hope this helps! :)
Area of the roller = 2pirh
= 2 * 22/7 * 160 * 252
= 2 * 22 * 160 * 36
= 253440 cm^2.
Area of 1 revolution = Area of roller = 253440 cm^2.
Area of 1500 revolution = 1500 *253440 cm^2
= 380160000 cm^2
Area of the ground = 38016 m^2.
Hope this helps! :)
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