Answer: 
Step-by-step explanation:
You need to use the following formula for calculate the area of a square:

Where "s" is the lenght of any side of the square.
You know that the area of a mural is
. Then, you can substitute this area into the formula and solve for "s", in order to find the side lenght of the mural.
Therefore, this is:

Answer:
500 meters
Step-by-step explanation:
1km=1000meters so 0.5km=500m
Answer:
85.9
Step-by-step explanation:
Answer lol i dont know
Step-by-step explanation: