the diameter of a garden roller is 1.4m and it is 2m long.How mu ch area will it cover in 5revolutions?
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it will cover 440 square metres of ground
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Heya !!!
Here is your answer dear,
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The diameter of roller = 1.4 m
length (height) = 2 m
C.S.A = 2πrh
= 2×22/7×1.4×2
= 17.6
C.S.A = 17.6m²
1 revolution = Curved surface area (of roller)
1 revolution = 17.6m²
5 revolutions = 17.6×5 = 88m²
Hence, the roller will cover 88m² in 5 revolution.
====================================
Hope it helps.
Here is your answer dear,
====================================
The diameter of roller = 1.4 m
length (height) = 2 m
C.S.A = 2πrh
= 2×22/7×1.4×2
= 17.6
C.S.A = 17.6m²
1 revolution = Curved surface area (of roller)
1 revolution = 17.6m²
5 revolutions = 17.6×5 = 88m²
Hence, the roller will cover 88m² in 5 revolution.
====================================
Hope it helps.
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