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?