The diameter of a garden roller is 1.4m and it is 2m long. How much area will it cover in 5 revolutions?
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Answered by
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Diameter = 1.4 m r = d/2 r = 1.4/2r = 0.7m curved surface area of cyclinder = 2 * 22/7 * r^2 = 2 * 22/7 * 0.7 * 0.7 = 8.8 m^2 No of revolution = 5 Therefore = 8.8 * 5 = 44 m
Hope it helps ! brainliest
Hope it helps ! brainliest
Anonymous:
wrong
Answered by
13
diameter of garden roller=1.4 m
so, radius=0.7m
length (height)=2 m
area will it cover in 5 revolutions= ?
for the area it will cover in 1 revolution, we need to find the C.S.A. of the cylindrical garden roller.
C.S.A. of cylinder=2πrh
2×22/7×0.7×2
2×22/7×7/10×2
88/10
8.8 m×m of area it will cover in 1 revolution.
so,
area covered in 5 revolutions=8.8×5=44m×m
so, radius=0.7m
length (height)=2 m
area will it cover in 5 revolutions= ?
for the area it will cover in 1 revolution, we need to find the C.S.A. of the cylindrical garden roller.
C.S.A. of cylinder=2πrh
2×22/7×0.7×2
2×22/7×7/10×2
88/10
8.8 m×m of area it will cover in 1 revolution.
so,
area covered in 5 revolutions=8.8×5=44m×m
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