Lesson: Arc Lengths and Sectors
In this lesson, we will learn how to find the arc length, the perimeter, and the area of a circular sector using their formulas.
Sample Question Videos
Worksheet: 25 Questions • 5 Videos
Find the length of the blue arc given the radius of the circle is 8 cm. Give the answer to one decimal place.
An arc has a measure of radians and a radius of 9. Work out the length of the arc, giving your answer in terms of , in its simplest form.
Write down an expression for the circumference of the circle.
If is measured in degrees, what fraction of the circle’s circumference is arc ?
Write an expression for the length of arc , given that is measured in degrees.