If the area of a rectangle is $240\ cm^2$ and the length of one side is $16\ cm$, then find the length of its adjacent side.

Given:

The area of a rectangle is $240\ cm^2$ and the length of one side is $16\ cm$.

To do:

We have to find the length of the adjacent side.

Solution:

We know that,

Area of a rectangle of length $l$ and breadth $b$ is $lb$.

Let the length of the adjacent side be $x$.

Therefore,

Area of the given rectangle $=16\times x$

$240=16x$

$x=\frac{240}{16}$

$x=15\ cm$

The length of the adjacent side is 15 cm.