Find the length of the wire required to go 13 times round a square field containing 24336 m2.  Choose the correct choice:
A) 15840 B) 3388 C) 2667 D) 8112 E) 66711

Rationale: "a 2 = 24336 = > a = 156 4 a = 624 624 * 13 = 8112 answer : d"
Answer: D