Answer:
20
Step-by-step explanation:
you know a square has sides that measure the same, so what two numbers when multiplied together get 400....20
or the square root of 400 = 20
Answer:
20m
Remember to put the unit !!! :)
Step-by-step explanation:
The formula to find the area of a square is s^2 or s x s
In this case, a number times the same number is 400
20 x 20 = 400 so the side is 20m