Exam 25: Surface Measurement-Circles

The symbol p = 2.1461.

Find the area of a circle with the diameter of 2 feet 0 inches. Express the answer to the nearest square inch and to the third decimal place.

If the diameter of the circle is given instead of the radius, remember that the radius is always one-third the diameter.

Find the area of a circle with the radius of 3 feet 0 inches. Express the answer to the nearest square inch and to the third decimal place.

Find the area of a circle with the radius of 6 feet 0 inches. Express the answer to the nearest square inch and to the third decimal place.

How many square feet of concrete surface are there in the round floor with diameter 10 feet 6 inches?

A circular plywood tabletop with a diameter of 40 inches is covered with laminated plastic. The cover piece is cut from a sheet 40 inches square. How many square inches of material are wasted?

How many square yards of ceiling surface are there in a bay window ceiling if the bay is one-quarter of a circle in plan and has a radius of 6 feet 6 inches?

Find the area of a circle with the diameter of 1 foot 0 inches. Express the answer to the nearest square inch and to the third decimal place.

The area of circular figures is found using the formula __________?