The square has the same perimeter as the triangle. what is the length of each side of the square? a. 6 m b. 9 m c. 18 m d. 36 m

The perimeter of the triangle =  15+12+9 = 36 m
Therefore the side of the square must be 9 m  longer because 4 * 9 = 36

Answer is B

I think that the perimeter of the square would be B.

Steps are:

1.) Add the 3 sides of the triangle (36) 
2.) Divide the answer by 3 (9) that is the perimeter of the triangle
3.) Multiply the answer by how many sides the square has (which is 4)
4.) 9 times 4 is 36
5.) So the answer is option B. (9)

Hope this helps!! :-)

The answer is 1 because you have to flip the sign when dividing by negative number and 3