Find the side length of a square with the same perimeter as a equilateral triangle with side 7 cm.

We first have to find the perimeter of the triangle.

Since it's a equilateral triangle, which means all the sides of the triangle is the same length.

Perimeter of triangle = 7 x3

= 21

And there r 4 sides in a square,

So just divide 21 by 4

21 : 4 = 5.25

So the answer is 5.25 cm