If the area of circle is 520 sq cm then its circumference?	Choose the correct answer:
A) 11  B) 81  C) 99  D) 266  E) 12
22/7 r2 = 520 =&gt; r = 12.9   2 * 22/7 * 12.9 = 81 Answer: 81
<result>B</result>
If the area of circle is 520 sq cm then its circumference?