Unit 11 Quiz - Geometry

If the area of a circle is 25 π in² , then the diameter is?

• 10 in
• 5 in
• 25 in
• pi in

Find the circumference of the circle in the image.

• 10π

• 20π

• 100π

• 20

What is the area of the circle in the image?

• 10

• 20π

• 100

• 100π

Find the length of the arc.

• 31.42cm

• 15.71cm

• 282.74cm

• 23.56cm

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.

1. measure of angle JNM

• 339

• 159

• 201

• 21

1. measure of arc JK

• 339

• 159

• 201

• 21

4. measure of arc PQ

• 161

• 71

• 199

• 109

• 270

What is the measure of ∠PTQ?

• 100°
• 140°
• 180°
• 120°

• 33
• 18
• 46
• 16