Lesson: Area of a Circle Mathematics • 7th Grade

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/2)^2 and solve problems involving quarter circles and semicircles and real-life situations.

Lesson Video

Sample Question Videos

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Lesson Worksheet

Q1:

Work out the area of the circle, giving your answer accurate to two decimal places.

Q2:

Given that the inner radius is 6.5 cm and the outer radius 11.5 cm, use 3.14 in place of to find the area of the colored region.

Q3:

Work out the area of the circle, giving your answer accurate to two decimal places.