Can anyone help me please​

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?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply