Question 949486
The diagonal is the hypotenuse of a right triangle, so:
l=length; w=width; d=diagonal
{{{l^2+w^2=d^2}}}
{{{55cm^2+48cm^2=d^2}}}
{{{5329sqcm=d^2}}} find square root of each side
73 cm=d ANSWER: The length of the diagonal is 73 cm.