For each of these problems, I'm going to be using the formula for the area of a circle, which is A = pi x r^2. All you have to do is plug in the numbers and solve.
1. A = 3.14 x 4^2 A = 3.14 x 16 A = 50.24mm^2 - option 3
2. A = 3.14 x 9^2 A = 3.14 x 81 A = 254.34cm^2 - option 2
3. Find area and divide by how many feet each flower needs, which is 2. A = 3.14 x 7^2 A = 3.14 x 49 A = 153.86/2 Flowers = 77 - option 3
Hope this helps!! :) If there's anything else that I can help you with, please let me know!
