# Question #71f34

Oct 30, 2016

$8.8$ m

#### Explanation:

Since the area of a square is ${l}^{2}$ where $l$ represents the width of the square, we can reverse the operation to obtain the length given the area. Therefore:

${l}^{2} = 4.84$
$l = \sqrt{4.84} = 2.2$

Note that we ignore the negative values of the square root as width cannot be negative, since ${\left(2.2\right)}^{2}$ and ${\left(- 2.2\right)}^{2}$ yield the same result.

Now that we have the width of the square, we know that the perimeter would be $4 l$, or four times the length. Therefore,

$4 l = 4 \cdot 2.2 = 8.8$

Thus the perimeter of the crime scene is $8.8$ m.

Note: Don't forget units!