The length of the two sides forming the right angle of a right angled triangle are 6 cm and 8 cm. The length of its circum-radius is :

Answer: Option A

According to question,
ABC is a right angle triangle,

∴ AB = 8 cm
   BC = 6 cm
∴ AC² = AB² + BC²
   AC = 64 + 36
   AC = $$\sqrt{100}$$
   AC = 10 cm
In right triangle
Circum Radius I_R = $$\frac{AC}{2}$$ = $$\frac{10}{2}$$ = 5 cm