Radians and Arc Length

FIND THE ARC LENGTH OF THE BOLDED ARC

• A

• B

• C

• D

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

• 47

• 74

• 94

• 123

Find the area of the dark blue sector shown at the left.  The radius of the circle is 4 units and the length of the arc (the curved edge of the sector) measures 7.85 units.  Express answer to the nearest tenth of a square unit.

• 0.3 square units

• 15.7 square units

• 19.7 square units

• 50.3 square units

What is 7π/4 radians in degrees?

• 300

• 135

• 315

• 45

Find the arc length indicated by the bolded arc. 

• 8.3 in

• 7.2 in

• 6.8 in

• 6.4 in

Find the arc length indicated by the bolded arc. 

• 31.4 cm

• 354.0 cm

• 706.9 cm

• 442.4 cm

Find the arc length of the bolded arc.

• A

• B

• C

• D

What is 270 degrees in radians? 

• π/4

• 3π/2

• 3π/4

• π/2

Find the arc length

• 7 cm

• 28π cm

• 7π cm

• 28 cm

Find the arc length

• 12π cm

• 15π cm

• 39.375 cm

• 14π cm