The radius of a wheel is 20.4 cm. What is the distance covered by the wheel in making 400 resolutions?  Choose the correct choice from the following answers.
A) 512.448 m	B) 704 m	C) 510.448 m	D) 706 m	E) 204 m

Rationale: "in one resolution , the distance covered by the wheel is its own circumference . distance covered in 400 resolutions . = 400 * 2 * 22 / 7 * 20.4 = 51244.8 cm = 512.448 m answer : a"
Answer: A