A bus stop is barricaded from the remaining part of the road, by using 60 hollow cones made
of recycled cardboard. Each cone has a base diameter of 40 cm and height 1m. If the outer
side of each of the cones is to be painted and the cost of painting is 16 per mº, what will be
the cost of painting all these cones ? (Use 1 = 3.14 and 1-04 = 1-02).
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thoda asan puchte
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