GRE Problem Solving Question - Jul 28, 2017
A 3 by 4 rectangle is inscribed in circle. What is the circumference of the circle?
Correct Answer: C
Draw the diagram. The diagonal of the rectangle is the diameter of the circle. The diagonal is the hypotenuse of a 3,4,5 triangle, and is therefore, 5.
Circumference = π.diameter = 5π