Find the diagonal length of a rectangle having the length and width of $5$ cm and $12$ cm respectively.

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Solution

The correct option is B $13$ cm
Given, length $= 5$ cm, width $= 12$ cm
We know diagonal length of a rectangle $=$ $\sqrt{l^{2} + w^{2}}$
$=$ $\sqrt{5^{2} + 12^{2}}$
$=$ $\sqrt{25 + 144}$
$=$ $\sqrt{169}$
$= 13$ cm

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