Question 734355
The diagonal is the hypotenuse of a right triangle with the legs the width and length of the rectangle.<P>
Find the hypotenuse using the Pythagorean Formula: Hypotenuse squared = the sum of the squared sides:  a^2 + b^2 = c^2.<P>
diagonal^2 = 800^2 + 180^2 = 640000 + 32400 = 672400.<P>
Diagonal (hypotenuse) is the square root of 672400 = 820 feet.