15. 
Alexander cut a circle out of red and white striped construction paper. He glued it to the top of his little sister's valentine box. He wanted to cut a piece of gold cord to go around the edges of the circle. The radius of the circle is four inches. How long should he cut the gold cord?


16. 
Megan and Brandon are planning a garden. Megan said if they make the garden round it would look better. Brandon said if they make the garden square they will be able to plant more. They have enough space to make a round garden with a diameter of twelve feet or a square garden with each side being twelve feet. If they put four plants in each square foot of ground, how many more plants will they be able to plant in the square garden than they could plant in the round garden?

