If a stack of coins has the same height which stack of coins has the greatest volume A: the uniform stack
B: the irregular stack
C: cannot be determined
D:they have the same volume

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle