(i) A 5-m-wide cloth is used to make a conical tent of base diameter 14 m and height 24 m. Find the cost of cloth used at the rate of ₹25 per metre. [CBSE 2014](ii) The radius and height of a solid right-circular cone are in the ratio of 5 : 12. If its volume is 314 cm3, find the total surface area. [Take π = 3.14.] [CBSE 2017]

(i) A 5-m-wide cloth is used to make a conical tent of base diameter 1

1.	(i) A 5-m-wide cloth is used to make a conical tent of base diameter 14 m and height 24 m. Find the cost of cloth used at the rate of ₹25 per metre. [CBSE 2014](ii) The radius and height of a solid right-circular cone are in the ratio of 5 : 12. If its volume is 314 cm3, find the total surface area. [Take π = 3.14.] [CBSE 2017]
Answer» (i) A 5-m-wide cloth is used to make a conical tent of base diameter 14 m and height 24 m. Find the cost of cloth used at the rate of ₹25 per metre. [CBSE 2014] (ii) The radius and height of a solid right-circular cone are in the ratio of 5 : 12. If its volume is 314 cm³, find the total surface area. [Take π = 3.14.] [CBSE 2017]