(See attached)
AO^2 = side a^2 - BO^2
AO^2 = 41^2 -40^2
AO^2 = 1,681 -1600
AO^2 = 81
AO = 9
DO^2 = side b^2 -BO^2
DO^2 = 50^2 -40^2
DO^2 = 2,500 -1,600
DO^2 = 900
DO = 30
Diagonal AD = AO + DO = 9 + 30 = 39 inches
Source:
http://www.1728.org/quadkite.htm
AO^2 = side a^2 - BO^2
AO^2 = 41^2 -40^2
AO^2 = 1,681 -1600
AO^2 = 81
AO = 9
DO^2 = side b^2 -BO^2
DO^2 = 50^2 -40^2
DO^2 = 2,500 -1,600
DO^2 = 900
DO = 30
Diagonal AD = AO + DO = 9 + 30 = 39 inches
Source:
http://www.1728.org/quadkite.htm