A `5`m -wide cloth is used to make a conical tent of base diameter 14 m and 24 m. Find the cost of cloth used at the rate of ₹ 25 per metre.
(ii) The radius and height of a solid right-circular cone are in the ratio of 5 : 12. If its volume is `314 cm^3`, find its total surface area

Answer

(i) Rs. 2750
(ii) `282.6 cm^(2)`

Explanation

(i) `"Area of the cloth required = curved surface of the tent "pirl=pirsqrt(r^(2)+h^(2))`
`"Length of the cloth required "=("area")/("width")`