Area of Circles - Mathematics 700 Fundamentals

The radius of a clock face is 8.5 centimeters. What is the area of the clock face? Approximate Π as 3.14.

226.87 cm2

What is the area of the following circle? Approximate Π as 3.14.

38.47 m2

A quarter has a diameter of approximately 24 millimeters. What is the area of the quarter? Approximate Π as 3.14.

452.16 mm2

Find the radius of a circle whose circumference is 31.4 centimeters. Approximate π as 3.14. r= _____ cm

5

At Mario's Pizza, a large pizza has a diameter of 18 inches. What is the area of two pizzas? Approximate Π as 3.14.

508.68 in.2

Find the area of a circle that has a radius of 14 feet. Approximate π as 3.14. Round your answer to the nearest hundredth. A= ________ ft2

615.44

A circular tabletop has a circumference of 94.2 inches. What is its area? Approximate Π as 3.14.

706.5 in.2

Find the area of a circle whose circumference is 31.4 centimeters. Approximate π as 3.14. A= _________ cm2

78.5

Find the area of a circle that has a diameter of 11 inches. Approximate π as 3.14. Round your answer to the nearest hundredth. A= ________ in2

94.99

To calculate the area of a circle, use the formula A = Π r2 . True False

True

In which of the following circles are the values of the area and circumference the same? Approximate Π as 3.14.

a circle with a radius of 2 feet.