Don L. answered • 01/30/19

Fifteen years teaching and tutoring basic math skills and algebra

Hi Monica, if all of the information is given, let x represent the length of one side of the equilateral triangle and one side of the square.

The equilateral triangle has 3 sides and the square has 4 sides.

Then 3x + 4x = 36, x equals approximately 5.14 cm.

Questions?