Assume = 22 7

MATHEMATICS · Subjective · GCSE · Mathematics · Geometry and Measures · Geometry and Measures

Problem

 Assume π=227, unless stated otherwise. \text { Assume } \pi=\frac{22}{7}, \text { unless stated otherwise. } 8. A bus stop is barricaded from the remaining part of the road, by using 50 hollow cones made of recycled cardboard. Each cone has a base diameter of 40 cm and height 1 m . If the outer side of each of the cones is to be painted and the cost of painting is ₹12₹ 12 per m2\mathrm{m}^{2}, what will be the cost of painting all these cones? (Use π=3.14\pi=3.14 and take 1.04=1.02\sqrt{1.04}=1.02 )

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