What is the measure of the radius of the circle that circumscribes a triangle whose sides measure 3, 4, and 5?
Options.
A) 3.5  B) 3  C) 5  D) 4  E) 2.5
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 circum raduis of the circle that circumscribes the right angle triangle = hypotanse / 2 = 5 / 2= 
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>
2.5   Ans. 2.5
<result>E</result>
What is the measure of the radius of the circle that circumscribes a triangle whose sides measure 3, 4, and 5?