A triangle has sides of lengths 3 cm, 4 cm, and 5 cm. What is the area of the circle inscribed in the triangle?

Answer 1

The area of the triangle is (1/2)(radius)(perimeter of the triangle

We can calculate the area and the perimeter of the triangle with the information we are given

Perimeter= 3+4+5=12

Area= (1/2) (3)(4)=6

so 6= (1/2)(r)(12)

r=1

Area of the circle is pi x r^2= pi