Area of the Circle and Sector of the Circle

A area between/bounded by two radii of the circle and the arc where the radii meet the circle.

• triangle

• arc length of a circle

• sector of a circle

• segment of a circle

Find the area of the circle below.

• 8.76 cm²

• 18.52 cm²

• 21.90 cm²

• 28.26 cm²

Find the area of the shaded sector of circle O. The radius is 6 inches and the central angle is 100°. Express answer to the nearest tenth of a square inch.

• 25.2 in²

• 28.5 in²

• 31.4 in²

• 38.2 in²

Mathematical Equivalence

ON

Round all intermediate steps to the nearest thousandth. Enter only a number in the blank.

Mathematical Equivalence

ON

What is the area of sector A0E? (Give your answer in terms of pi)

Mathematical Equivalence

ON

Find the area of the circle. When a number is written next to the center of the circle, it represents the diameter length. The diameter is 18 in.

• 56.52 in²

• 254.34 in²

• 1017.36 in²

• 113.04 in²

What is the radius of a circle with an area of 49π?

• 49

• 10

• 7

• 14

A cathedral window is built in the shape of a semicircle. If the window is to contain three stained glass sections of EQUAL SIZE, what is the area of the YELLOW SECTOR?

• 3.3 ft²

• 4.5 ft²

• 6.3 ft²

• 7.1 ft²