Mathematics
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 per m<sup>2</sup>, what will be the cost of painting all these cones? (Use π = 3.14 and take = 1.02)
Related Questions
The slant height and base diameter of a conical tomb are 25 m and 14 m respectively. Find the cost of white-washing its curved surface at the rate of ₹ 210 per 100 m2.
A joker’s cap is in the form of a right circular cone of base radius 7 cm and height 24 cm. Find the area of the sheet required to make 10 such caps.
Find the surface area of a sphere of radius 10.5 cm.
Find the surface area of a sphere of radius 5.6 cm.