Answers

2015-06-27T10:24:52+05:30
Length of rope = 70 × 2πr = 70×2×π×14 = 140π×14

if the cylinder had radius 20, let the number of rounds = y
y × 2πR = 140π × 14

⇒ y =  \frac{140 \pi \times 14}{2 \pi \times 20} =49

So it can go 49 times round the cylinder.
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