Area and Sector

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 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

Find the arc length.  Leave your answer in terms of π.

• 7/4π

• 7/2π

• 1/8π

• 45π

When she is outdoors, Tasha, the dog, is tied to a stake in the center of a circular area of radius 24 feet. The angle between her dog house and her favorite hydrant is 165 degrees.  What is the length of the arc from her dog house to the hydrant, following minor arc DG, to the nearest foot.

• 40

• 35

• 55

• 69

Find the length of the bold arc.Leave pi in your answer.

• 5688π ft

• 15.8π ft

• 150.4π ft

• 54,150 ft

Find the length of the arc.

• 31.42cm

• 15.71cm

• 282.74cm

• 23.56cm

what is the area of this semicircle with a diameter of 8 cm?

• 100.48cm²

• 80cm²

• 200.96cm²

• none of the above