Lesson: Area and Circumference of a Circle
In this lesson, we will learn how to identify when to use the circumference and area formulas of circles, including arc lengths and sector areas.
Sample Question Videos
Worksheet: 25 Questions • 4 Videos
The radius of a circle is 7 cm and the central angle of a sector is . Find the perimeter of the sector to the nearest centimeter.
The radius of a circle is 21 cm and the angle of a sector is . Find the area of the sector giving the answer to the nearest square centimeter.
The diameter of a circle is 78 cm and the arc length of a sector is 22 cm. Find the area of the sector, giving your answer to the nearest square centimeter.