A roller 1.5m long has a diameter of 70cm.how many revolution will it make to level a play ground measuring 50m❎33m
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first find surface area of roller= 2πrh
=2×22/7×35×150
= 2×22×5×150
= 33000cm²
= 3.3m²
number of revolution= (50×33)/3.3
= 50×10
= 500
plzz mark my answer brainiest
=2×22/7×35×150
= 2×22×5×150
= 33000cm²
= 3.3m²
number of revolution= (50×33)/3.3
= 50×10
= 500
plzz mark my answer brainiest
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