Circles: Circumference, Area, Sectors, & Arcs

What is the radius?

• 18
• 72
• 38
• 14

Tags

CCSS.7.G.B.4

find the area of the circle below.

• 100 cm

• 225 cm

• 9 cm

• 28.26 cm

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 163.2

• 15.3

• 124.2

• 113.1

Find the circumference of the circle.

• 113.04

• 1017.36

• 254.34

• 56.52

Tags

CCSS.7.G.B.4

Meg swam from one side of her circular pool to the other side going through the center.  If Meg swam 8 feet, what is the approximate circumference of Meg's pool?

• 16 feet
• 25.12 feet
• 251.2 feet
• 4 feet

Tags

CCSS.7.G.B.4

A DVD has a diameter of 15 millimeters. Which equation would help you determine the circumference?

• c = 15π

• C = 2π15

• c = 15 ÷ π

• c = 15 π

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

• 7/4π
• 7/2π
• 1/8π
• 45π

Tags

CCSS.HSG.C.B.5

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.

• 9.2 sq. in.
• 10.5 sq. in.
• 31.4 sq. in.
• 38.2 sq. in.

Tags

CCSS.HSG.C.B.5

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

Tags

CCSS.HSG.C.B.5

FIND THE ARC LENGTH OF THE BOLDED ARC

• 283.5

• 10.2

• 733.0

• 73.3

Tags

CCSS.HSG.C.B.5