The radius of the two circular fields is in the ratio 3: 10 the area of the first field is what percent less than the area of the second?	Choose the correct choice:	A) 71 %	B) 51 %	C) 91 %	D) 81 %	E) 61 %

Rationale: "r = 3 ï € r 2 = 9 r = 10 ï € r 2 = 100 100 ï € â € “ 9 ï € = 91 100 - - - - ? = > 91 % . answer : c"
Answer: C