Find the inradius of triangle ABC.
Find the circumradius of triangle ABC.
Inradius = area of triangle / semi-perimeter
Semiperimeter = ( 6 + 5 + 4.5) /2 = 7.75
Area = sqrt [ 7.75 * (7.75 - 6) * (7.75 - 5) * (7.75 - 4.5) ] ≈ 11
Inradius = 11 / 7.75 ≈ 1.42 cm
Circumradius = product of the sides / [4 * area ] = (5 * 6 * 4.5) /(4 * 11) ≈ 3.07 cm