Question 35861
The sum of the squares of the measures of all the sides of a rectangle is 1458. Find the measure of a diagonal of the rectangle.
I appreciate your help with this.
IF THE SIDES ARE L AND B THEN SUM OF SQUARES OF ALL SIDES IS 
2(L^2+B^2)=1458
L^2+B^2=729=SQUARE OF DIAGONAL=D^2
D=SQRT(729)=27