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Diagonal of a box. The length of the diagonal of a box $D$ is a function of its length $L,$ width $W,$ and height $H:$

$$D=\left(L^{2}+W^{2}+H^{2}\right)^{1 / 2}$$

a) Find $D$ for the box shown in the accompanying figure.

b) Find $D$ if $L=W=H=1$ inch.

a) 13 in.

b) $\sqrt{3}$ or 1.73 in.

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Campbell University

McMaster University

Harvey Mudd College

University of Michigan - Ann Arbor

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