How much string is needed to wrap around the world?

Compare the distance a man’s head travels to the distance his feet travel when he walks around the…

Relate the surface area of a sphere to the area of a circle.

Find a method that will construct a square that has the same area as the area of a…

Compare attributes of a circle that is inscribed in a semicircle to attributes of that semicircle.

Determine the measure of the central angle of a circle that will make the shaded region’s area 1/…

Compare slices of pizza from pizzas with different diameters.

Finding the cumulative area of shrinking circles.

Finding an estimation for the area of a circle.

Determine the area of a target formed by concentric circles.