Deriving Pi Circumference and Area of Squares

A circular pie has an area of 706.5 cm². What is the radius of the pie? Round to nearest whole number. Don't forget to label.

Ms. Merine calculated that her hoop earring has a diameter of 3.5 centimeters. What is the area of her earring? Round to the nearest hundredth. Label as square centimeters or sq cm.

Hannah drew a circle with a radius of 30 cm. Jonas drew a circle with a radius of 20 cm. What is the approximate difference in the areas of their circles? Round to the nearest hundredth. Use a comma in your answer and label as (sq cm) or (square cm) or (square centimeter)

The stained glass window is a semicircle. What is the distance around the window? Round to nearest hundredth. Don't forget to label.

If my circumference is 50.24 ft, what is my radius? Round to nearest hundredth. Don't forget to label.

A pan size pizza has a circumference of 37.68 inches. What is the radius (round to nearest whole number)? Find the area the pizza covers (round to nearest hundredth). Don't forget to think about labels.

• 6 inches and 113.09 square inches

• 12 inches and 452.39.04 square inches

• 12 inches and 49.70 square inches

• 6 inches and 24.85 square inches

The distance around a circular track is 31.4 yards. What Is the radius of the track? Round to the nearest hundredth. Don't forget to label.

Find the circumference of a circle with a radius of 12.5 mm. Round to nearest hundredth. Don't forget to label.

A circular table top has an area of 324 square inches. Which measurement is closest to the radius of the table top in inches? Round to the nearest hundredth. Don't forget to label.

The area of a circle is 12.56 yd². What is the circle's diameter? Round to the nearest whole number.