the perimeter of a triangle is 20 cm and the inradius of the triangle is 2.5 cm . what is the area of the triangle
"explanation : area of a triangle = r * s where r is the inradius and s is the semi perimeter of the triangle . area of triangle = 2.5 * 20 / 2 = 25 cm 2 answer : option c"
triangle_area(2.5, 20)