What is the perimeter of a square that has an area of 100?

The perimeter would be 40.

Step-by-step explanation:

A square would have all the sides equal. So, to find what times what equals 100 that are the same numbers, we can simply do root 100.

The square root of 100 is 10. So, each side of the square is 10 units. A square has has 4 equal sides. So, 10 + 10 + 10 + 10 = 40.

40 is the perimeter.