Question

Ella picked the polygon with with the greatest perimeter which of the following polygons did she pick.a triangle with 8 cm on each side,a square with the 5 for each four sides

Answer 1

She would have picked the triangle. Added up, the triangle would have a perimeter of 24 cm, but the square would only be 20 cm.
  

Answer 2

8 times 5? maybe 40 is your answer