Question

the area of a square is $20\\ m^2$.
what is the length of a side of the square?
a. $\sqrt{10}\\ m$
b. $\sqrt{20}\\ m$
c. $5\\ m$
d. $10\\ m

Explanation:

Step1: Recall square area formula

The area $A$ of a square is $A = s^2$, where $s$ is the side length.

Step2: Substitute given area

Given $A=20$, so $20 = s^2$.

Step3: Solve for side length

Take square root of both sides: $s = \sqrt{20}$

Answer:

B. $\sqrt{20}$ m