Answer:
19
Step-by-step explanation:
qwertyuiop[sdfghjkl;zxcvbnm,.
I guess its 40 meters since
Area of a square is (Length)^2
and The area is 100, so square root that and you get your length which is 10 meters.
and since perimeter is the sum of lengths of sides, and a square has 4 sides, your perimeter is 40 meters! :)
Well divide them. 2/3=0.666 repeated. So use a bar over the top of the third six.