Question

The length and breadth of a rectangle are $12cm$ and $5cm$, respectively, then its diagonal is __________ cm.

Answer 1

We have,

Length of the rectangle $\left(l\right)=12cm$

Breadth of the rectangle $\left(b\right)=5cm$

Now, the diagonal of the rectangle $\left(d\right)=\sqrt{l^2+b^2}$

$=\sqrt{{12}^2+5^2}$

$=\sqrt{144+25}$

$=\sqrt{169}$

$=13cm$
Hence, the diagonal of the rectangle is $13cm$