Find the diameter, circumference and area of the circle above.

A circle has a diameter of 10cm. What is the circumference?

Find the area of a circle if the circumference is .

Find the diameter of a circle if the circumference is .

If the diameter of a circle is , what is the area of the circle?

Determine the circumference of the circle with an area of .

A barn manager has designed a circular enclosure with a circumference of 75.4 feet. She would like to order sand to fill the enclosure. If one unit of sand covers 27 square feet. How many units of sand will she need to order? Please round your answer up to the nearest whole unit.