Circle Area Formulas

What number is pi?

• 1.41

• 2.00

• 3.14

• 5.14

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

What is the area formula for a circle?

• A = πr²

• A = 2πr

• A = √π

Find the area of the circle below.

• 8.76 cm²

• 18.52 cm²

• 21.90 cm²

• 28.26 cm²

What is this the formula for?

• arc length

• area of a sector

• area of a segment

• arc measure

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

The distance along the edge of a circle between two points is the _________

• area of a sector

• arc length

• arc of a circle

• sector of a circle

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

What is the area of the shaded SECTOR? Round to the nearest hundredth.

• 9.42 u²

• 113.10 u²

• 284.3 u²

• 452.39 u²