Jeanine Baker makes floral arrangements. She has 16 different cut flowers and plans to use 7 of them. How many different selections of the 7 flowers are possible?

Use pythagorean’s theorem and find the missing side lengths of the two smaller triangles and add them together
13^2 - 12^2 = 5
15^2 - 12^2 = 9
5+9 = 14
14 is the length of each side of the square
14^2 + 14^2 = 19.8
19.8 is the diagonal length of the inside if the square

1) 11, because it's a perfect square.2) 4√3