The Perimeter of an Equilateral Triangle Is 3 Centimeters More

Multiple Choice

The perimeter of an equilateral triangle is 3 centimeters more than the perimeter of a square and the length of a side of the triangle is 4 centimeters more than the length of a side of the square. Find the length of a side of the equilateral triangle. (An equilateral triangle has three sides of the same length.)

A) 7 centimeters
B) 18 centimeters
C) 19 centimeters
D) 13 centimeters