A bus stop is barricaded from the remaining part of the road, by using 50 hollow cones made of recycled cardboard. Each come has a base diameter of 40 cm and height 1m. If cones is to be painted and the cost of painting is Rs.12 per sq.meter, what will be the cost of painting of all these cones? (use pie value as 3.14 and take root 1.04 equal to 1.02)
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l = root 0.2^2m + 1 ^ 2m = root 0.04 + 1 = root 1.04 = 1.02 m
cost = 12 * 50 * 22/7 *r * l
= 12 * 50 * 3.14 * 0.2 * 1
= 120 * 3.14 = rupees 376.80
cost = 12 * 50 * 22/7 *r * l
= 12 * 50 * 3.14 * 0.2 * 1
= 120 * 3.14 = rupees 376.80
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