Hard
What is the radius of the circumcircle of the triangle with sides 6, 8, 10?
Explanation
Explanation
Since 6-8-10 forms a right triangle (6^2+8^2=10^2), the hypotenuse (10) is the diameter of the circumcircle. So the radius = 10/2 = 5.
PRO TIP
Re-check your working by substituting the answer back into the original question.