Question

inner circumference of a circular racing track is 1760 m. the width of the track is 21 m . find . the cost of levelling the track at the rate of ₹4 per square m . the cost of laying grass in inner part at the rate of ₹10 per square
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Answer 1

Answer:

inner circumference of a circular racing track is 1760 m.

$2\pi \: r = 1760 \\ r = \frac{1760}{2\pi} = 280 \: cm$