What is the measure of the radius of the circle that circumscribes a triangle whose sides measure 7, 24 and 25?	Select.
A) 2.5  B) 6.5  C) 12.5  D) 14  E) 16
Some of pyhtagron triplets we need to keep it in mind.   Like {( 2,3,5) , ( 5,12,13) ,( 7, 24,25), ( 11, 60,61).   So now we know the triangle is an right angle triangle. The circle circumscribes the triangle.   The circumraduis of the circle that circumscribes the right angle triangle = hypotanse / 2 = 25 / 2= 
<gadget id="calculator">25 / 2</gadget>
<output>25/2 = around 12.5</output>
12.5   Ans. 12.5
<result>C</result>
What is the measure of the radius of the circle that circumscribes a triangle whose sides measure 7, 24 and 25?