Question

the area of a square poster is 27 in.². find the length of one side of the poster to the nearest tenth of an inch.
the length of one side of the poster is
(round to the nearest tenth as needed.)

Explanation:

Step1: Recall area formula for square

The area formula of a square is $A = s^{2}$, where $A$ is the area and $s$ is the side - length. Given $A = 27$ in$^{2}$, we need to solve for $s$. So, $s=\sqrt{A}$.

Step2: Calculate side - length

Substitute $A = 27$ into the formula $s=\sqrt{A}$, we get $s=\sqrt{27}$. Using a calculator, $\sqrt{27}\approx5.2$ (rounded to the nearest tenth).

Answer:

$5.2$