P=a(b+c), solve for a

15 points ! ~ see if you know the answer to both you!

The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?

Which statement best explains why ben uses the width hi to create the arc at j from point k