Review Length of Arc, Tangents, Circles

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.

is the formula for?

• arc length
• area of a sector
• area of a segment
• arc measure

Find the length of the bold arc.

• 61.3ft
• 20.4ft
• 7351.3ft
• 22,068ft

The area of a triple pepperoni pizza is 254.34 in². What is the circumference of the pizza crust?

• 40.79 in
• 31.44 in
• 56.52 in
• 28.27 in

A ____ angle is an angle whose vertex is a the center of a circle.

• supplementary
• complimentary
• central
• obtuse

The Jones family wants to enclose their circular garden with a fence.
To the nearest foot, what is the minimum length of fencing they need to buy?

• 56.25 ft
• 246 ft
• 365 ft
• 393 ft

• A
• B
• C
• D

In circle O, the radius is 4, and the measure of minor arc AB is 120 degrees. Find the length of minor arc AB.

• 5/3π
• 9π
• 8/3π
• 6π

What best describes segment AB?

• chord
• secant
• tangent
• diameter

• A
• B
• C
• D