The radius of the two circular fields is in the ratio 3: 5 the area of the first field is what percent less than the area of the second?
Select:  A) 29  B) 27  C) 29  D) 64  E) 99
r = 3 πr2 = 9   r = 5 πr2 = 25   25 π – 16 π   100 ---- ? =&gt; 64% Answer: 64
<result>D</result>
The radius of the two circular fields is in the ratio 3: 5 the area of the first field is what percent less than the area of the second?