Arc length and sector area

Alison is jogging on a circular track that has a radius of 140 feet.  She runs along the track from point R to point N, a distance of 230 feet. Find to the nearest degree, the measure of minor arc RN.

• 47
• 74
• 94
• 123

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

• 7/4π
• 7/2π
• 1/8π
• 45π

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.

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

• 1.26 units²
• 452.39 units²
• 113.10 units²
• 40,715.04 units²

Tags

CCSS.HSG.GMD.A.1

CCSS.HSG.SRT.D.9

Find the arc length of the bolded arc.

• A
• B
• C
• D

Tags

CCSS.HSF.TF.A.1

CCSS.HSG.C.B.5