The circumference of a pizza is 81 in. what is the radius?

When only separate discreet points are graphed it is called?

What is the total surface area of this square pyramid?

3women sell hats at a craft fair weekly. the money they make at the fair is split into categories. 9% goes to pay taxes. $55 goes to pay rent for the space they sell in. the rest is split between the women. if the group make $706 at the fair, how much does each women get paid once the money is divided