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?	Choose the correct choice from the following answers.
A) 50%
B) 60%
C) 40%
D) 64%
E) 75%
Explanation:   r = 3 Ï€r2 = 9   r = 5 Ï€r2 = 25   25 Ï€ â€“ 16 Ï€   100 ---- ? =&gt; 64%   ANSWER IS 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?