Find the curved surface area, if the radius of a cone is 28 m and slant height is 30 m?
Choose the correct choice from the following choices:
A) 2550	B) 2640	C) 3960	D) 4280	E) 5490

Rationale: "cone curved surface area = ï € rl 22 / 7 ã — 28 ã — 30 = 88 ã — 30 = 2640 m ( power 2 ) answer is b ."
Answer: B