The Squared Diagonal formula, `D = sqrt(L_1^2 + L_2^2)`, computes the length Diagonal with squared Cornerof the diagonal (D) on an object with a squared corner and two lengths (L1 and L2).
.1 Choose the units. The default is inches (in)
.1 Enter the lengths (L1 and L2)
This will return the length of the diagonal (d)