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GRE Problem Solving Question - Jul 28, 2017  


0

A 3 by 4 rectangle is inscribed in circle. What is the circumference of the circle?

A. 2.5π 
B. 3π 
C. 5π 
D. 4π 
E. 10π

 
0

Correct Answer: C

 

Explanation:

 

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

 



  
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