A circle with an area of 13_π_ in2 is centered at point C. What is the circumference of this circle?

The surface area of a sphere is .

is a point on the surface of the sphere; is the point on the sphere farthest from . A curve is drawn from to entirely on the surface of the sphere. Give the length of the shortest possible curve fitting this description.

If a circle has an area of , what is the circumference of the circle?

A circle has the equation below. What is the circumference of the circle?

(x – 2)2 + (y + 3)2 = 9

A 6 by 8 rectangle is inscribed in a circle. What is the circumference of the circle?

A car tire has a radius of 18 inches. When the tire has made 200 revolutions, how far has the car gone in feet?

A gardener wants to build a fence around their garden shown below. How many feet of fencing will they need, if the length of the rectangular side is 12 and the width is 8?

Find the circumferencce fo a circle given radius of 7.

The area of a circle is . What is its circumference?

Ashley has a square room in her apartment that measures 81 square feet. What is the circumference of the largest circular area rug that she can fit in the space?