Find the curved surface area, if the radius of a cone is 21 m and slant height is 15 m?	Select:  A) 660  B) 770  C) 880  D) 900  E) 990

Rationale: cone curved surface area = ï € rl 22 / 7 ã — 21 ã — 15 = 66 ã — 15 = 990 m ( power 2 ) answer is e .
Answer: E