Radian/Degree/Reference Angle/Area of a Sector

What is the green area called?

• Sector

• Circumference

• Arc Length

• Area

Find the exact area of the shaded sector of the circle.

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Find the approximate area of the shaded sector.

• 37.70 cm²

• 6.28 cm²

• 28.27 cm²

• 9.42 cm²

Find the area of the shaded sector. Round to the nearest hundredth.

• 7.92 units ²

• 24.74 units²

• 10.60 units²

• 98.19 units²

What is the area of the un-shaded sector?

What is the reference angle for 125°?

• 235°

• 125°

• 75°

• 55°

What is the reference angle for 275°?

• 85°

• 95°

• -85°

• -95°

What is the reference angle?

• 163

• 73

• 27

• 107

What is the reference angle for 63°?

• 117°

• 207°

• 63°

• 153°

What is the reference angle?

• 112

• 68

• 158

• 248