Lesson: Arc Lengths and Sectors Geometry • Concepts and Skills • Glencoe • Geometry • Math in Focus • Singapore Math • Course 1 • Volume B • Common Core • enVision • Algebra 2 • Common Core • enVision • Geometry • Common Core • Prentice Hall • Geometry • Common Core • Glencoe • Geometry • Common Core • Glencoe • Algebra 2 • Common Core • Math Connects • Concepts, Skills, and Problem Solving • Course 1 • Student EditionMathematics
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
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.
For the given figure, is the center of the circle and is the measure of arc .
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.