A 9 by 12 rectangle is inscribed in circle. What is the circumference of the circle?	Options
A) 2.5π  B) 5π  C) 10π  D) 12.5π  E) 15π
The diagonal of the rectangle will be the diameter of the circle.   and perimeter= 2*pi*r   Ans: 15π
<result>E</result>
A 9 by 12 rectangle is inscribed in circle. What is the circumference of the circle?