Lesson: Area of a Circle

In this lesson, we will learn how to find the area of a circle given its radius or diameter using the formula πr^2 or π(d/4)^2 and solve real-world problems.

Video

13:30

Sample Question Videos

01:59
01:41
01:10

Worksheet: 25 Questions • 3 Videos

Q1:

Given that , work out the area of the semicircle, giving your answer as a fraction of .

Q2:

Given that , work out the area of the semicircle, giving your answer as a fraction of .

Q3:

Circle , of radius 6, is divided into three equal sectors. Calculate the area of each sector, using 3.14 to approximate .

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