Question

A triangle has sides with lengths of 3, 5, and 2. What is the radius of the triangles inscribed circle?

Answer 1

The radius of the inscribed circle is represented by 'r', which is given by `Delta/s`, where `Delta` = area of the triangle ,and s= `(a+b+c)/2` , with a, b ,c being the sides.

Also the area = `sqrt (s(s-a)(s-b)(s-c))` by Heron formula

Now you have only to replace the values of the sides to get the radius