A road 3.5 m wide surrounds a circular park whose circumference is 88 cm. Find the cost of paving the road at the rate of rupees 60 per square metre
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C = 88
r = (88 * 7)/(22 * 2)
r = 14
new radius =14 + 3.5 = 17.5m
required area = 22/7 *((17.5 * 17.5) - (14 * 14))
=22/7 * (306.25 - 196)
= 22/7 * 110.25 =346.185
r = (88 * 7)/(22 * 2)
r = 14
new radius =14 + 3.5 = 17.5m
required area = 22/7 *((17.5 * 17.5) - (14 * 14))
=22/7 * (306.25 - 196)
= 22/7 * 110.25 =346.185
sarwang:
oh sorry, cost = 346.185 * 60 = 20771.1rs
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