Exercise78

The diagonal length ($$D$$) of a rectangle with side lengths $$L$$ and $$W$$ is given by:

$$\displaystyle{ D=\sqrt{L^2+W^2} }$$

Determine the diagonal length of rectangles with $$L={9\ {\rm ft}}$$ and $$W={12\ {\rm ft}}\text{.}$$

The diagonal length of rectangles with $$L={9\ {\rm ft}}$$ and $$W={12\ {\rm ft}}$$ is .

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