Circumradius = product of the sides / [ 4 * area ]
Product of the sides = (29)^2 * 40 = 33640
Height of triangle = sqrt (29^2 - 20^2) = sqrt (441) = 21
Area = (1/2) base * height = (1/2) (40) (21) = 420
4*area = 1680
Circumradius = 33640 / 1680 ≈ 20.02
