How to find the perimeter of a sector using arc length formula

The video tutorial explains how to find the perimeter of a sector of a disk with a radius of 11 cm and an angle of 10 degrees. It covers the concept of perimeter as the distance around a shape and introduces arc length as a component of the perimeter. The tutorial demonstrates how to convert degrees to radians and calculate the arc length using the formula s = r * θ. Finally, it combines the arc length with the radius to find the total perimeter, rounding the result to the nearest hundredth.

What is the radius of the sector mentioned in the problem?

• 13 centimeters

• 11 centimeters

• 10 centimeters

• 12 centimeters

What is the formula used to calculate the arc length of a sector?

• s = r + θ

• s = r - θ

• s = r / θ

• s = r * θ

How do you convert an angle from degrees to radians?

• Multiply by π/180

• Multiply by 180/π

• Add π/180

• Subtract π/180

What is the approximate arc length of the sector in centimeters?

• 2.02

• 2.12

• 1.92

• 1.82

What is the total perimeter of the sector in centimeters?

• 22.92

• 23.02

• 23.92

• 24.92