A conical tomb has base diameter 14 m and slant height 25 m. White-washing its curved surface costs ₹210 per 100 m². Find the cost. (π = 22/7)

Question

Accepted Answer

₹1155. r = 7 m. CSA = 22/7 × 7 × 25 = 550 m². Cost = 550 × 210 ÷ 100 = ₹1155. (₹2310 uses the diameter as radius; ₹11550 forgets to divide by 100.)

A conical tomb has base diameter 14 m and slant height 25 m. White-washing its curved surface costs ₹210 per $100 m^{2}$ . Find the cost. (π = $\frac{22}{7}$ )