Answer:
8 meters
Explanation:
Since the 4 sides of a square are all equal, the area of a square can be found using:
a=s*s or
a=s^2
We know that the area is 64 square meters, so we can substitute 64 in for a
64=s^2
We are trying to find a side, s, so we have to get s by itself. Since s is being squared, take the square root of both sides. This will cancel out the exponent, and leave s by itself.
![√(64)=√(s^2)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/wdzrwx9u08hrtamjkquq995wrci5yf6orb.png)
8=s
So, one side of the backyard is 8 meters