You can put this solution on YOUR website! A Rectangle is 10 inches wide and 11 inches long. What is the length of the diagonal?
Apply Pythagorean theorem:
Let d = the diagonal
then
d^2 = 10^2 + 11^2
d^2 = 100 + 121
d^2 = 221
d = sqrt(221)
d = 14.87 inches