3/26 pt. 2

What is the formula to calculate arc length when the angle is in radians?

• s = theta * r

• s = theta / r

• s = r^2

• s = 2 * pi * r

If a circle has a radius of 12 feet and an angle of 5 radians, what is the arc length?

• 60 feet

• 17 feet

• 24 feet

• 5 feet

How do you convert an angle from degrees to radians for arc length calculation?

• Multiply by 180/pi

• Multiply by pi/180

• Divide by 180/pi

• Divide by pi/180

What is the arc length if the radius is 8 cm and the angle is 150 degrees?

• 10 cm

• 25 cm

• 15 cm

• 20.944 cm

What formula is used to calculate arc length when the angle is in degrees?

• theta/360 * 2 * pi * r

• 2 * pi * r

• theta/180 * pi * r

• theta * r

What is the formula to calculate the area of a sector when the angle is in radians?

• 2 * pi * r

• theta/360 * pi * r^2

• 1/2 * theta * r^2

• pi * r^2

If a sector has a radius of 10 cm and an angle of 90 degrees, what is its area?

• 10 pi

• 50 pi

• 100 pi

• 25 pi

How do you convert the angle from radians to degrees for sector area calculation?

• Divide by 180/pi

• Multiply by pi/180

• Divide by pi/180

• Multiply by 180/pi

What is the area of a sector with a radius of 5 feet and an angle of 60 degrees?

• 20 square feet

• 13.1 square feet

• 10 square feet

• 15 square feet

If the angle is 2 radians and the radius is 8 cm, what is the area of the sector?

• 64 square cm

• 32 square cm

• 16 square cm

• 128 square cm