The radius of a cylinder is 12 m, height 21 m. the lateral surface area of the cylinder is:
Choose the correct choice from the following options:
A) 1584 B) 1854 C) 1458 D) 1485 E) none of them

Rationale: lateral surface area = 2 π rh = 2 × 22 / 7 × 12 × 21 = 44 × 36 = 1584 m ( power 2 ) answer is a .
Answer: A