Find the area of a circle with the following radius:

Find the area of a square with the following side length:

A farmer has to make a square pen to hold chickens. If each chicken has to have of area to roam and there are chickens total, what is the length of the amount of fencing required to pen in the chickens?

Give the area of the circle on the coordinate plane with equation

.

A circle on the coordinate plane has center and passes through . Give its area.

A cube has surface area 6. Give the surface area of the sphere that is inscribed inside it.

Source: United States Census Bureau

The average population density of a geographic area is defined to be the average number of residents per square mile.

Above is a table with the land areas and populations of five states.Which state among the five has the greatest population density?

The perimeter of a square is . In terms of , give the area of the square.

The volume of a sphere is equal to . Give the surface area of the sphere.

The average population density of a geographic area is defined to be the average number of residents per square mile.

Above is the map of a county whose population is about 120,000. Which of the following is the best estimate of the average population density?