Circles Practice

In circle O, the radius is 4, and the length of minor arc AB is 4.2 feet.  Find the measure of minor arc AB to the nearest degree.

• 90
• 60
• 55
• 113

Find the length of the arc to 2dp

• 31.42cm

• 15.71cm

• 282.74cm

• 23.56cm

Find the length of the minor arc.

• $\frac{19}{9}\pi$ cm

• $\frac{38}{9}\pi$ cm

• $\frac{576}{19}\pi$ cm

• $\frac{31}{36}\pi$ cm

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 thenearest tenth of a square unit.

• 0.3 square units
• 15.7 square units
• 19.7 square units
• 50.3 square units

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

• 9.42 u²

• 113.10 u²

• 284.3 u²

• 452.39 u²

Find the area of each sector.

• 4248 m²
• 7.9 m²
• 2827.4 m²
• 11.8 m²

What is the area of sector​ GPH?

• 9π yd²

• 32π yd²

• 18π yd²

• 6π yd²

Solve for x and y.

• x=85⁰  y = 150⁰
• x = 85⁰  y = 50⁰
• x = 95⁰   y = 150⁰
• x = 95⁰   y = 50⁰

Find the measure of arc SR

• 70⁰
• 35⁰
• 110⁰
• 55⁰

Find m∠DAR.

• 34⁰
• 17⁰
• 68⁰
• 136⁰