How are quadratics answered and what is the formula?

If you answer 2+2 you will get over 80 points

Ineed your ! i was to turn this into pond first thing i gotta do is outline the inside with this plastic how big should i cut the plastic the height: 10 1/2” the length: 40” the width: 12” me !

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters