the diameter of a garden roller is 1.4m tand it 2m long how much area will it cover in 50 revolution
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Diameter = 1.4 m
r = d/2
r = 1.4/2
r = 0.7m
curved surface area of cyclinder = 2π r^2 = 2×22/7×0.7×0.7 = 8.8 m^2
No. of revolution = 50
Therefore = 8.8×50
= 440
r = d/2
r = 1.4/2
r = 0.7m
curved surface area of cyclinder = 2π r^2 = 2×22/7×0.7×0.7 = 8.8 m^2
No. of revolution = 50
Therefore = 8.8×50
= 440
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