The diameter of a garden roller is 1.4 m and it is 2 m long. How much area will it cover in 50 revolutions?
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Answer:
Area covered = Curved surface × Number of revolutions
r=21.4=0.7 m
h=2 m
Curved surface = 2πrh=2×722×0.7×2=8.8 m2
Hence,
Area covered = 8.8×5=44 m2
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the cost of fencing is rs3800 for every 100 metres how much does it cost to fence a rectangular field measuring 600 m by 450 m
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