Understanding the Area of a Sector

What are the two units of measurement for angles discussed in the video?

• Radians and meters

• Degrees and meters

• Radians and degrees

• Degrees and centimeters

Which formula is used to calculate the area of a sector when the angle is given in degrees?

• Area = Degree/360 × π × R²

• Area = π × R²

• Area = 1/2 × R² × Radian

• Area = Radian/2 × π × R²

In the example with a radius of 4 cm and an angle of 80 degrees, what is the calculated area of the sector?

• 11.17 cm

• 11.17 cm²

• 12.34 cm²

• 10.50 cm²

What is the formula for calculating the area of a sector when the angle is given in radians?

• Area = π × R²

• Area = Degree/360 × π × R²

• Area = 1/2 × R² × Radian

• Area = Radian/2 × π × R²

In the example with a radius of 3 feet and a radian measure of 3π/2, what is the calculated area of the sector?

• 22.21 ft²

• 21.21 ft

• 21.21 ft²

• 20.21 ft²