fbpx

Areas of Circles and Circle Segments GCSE Maths Revision

Part 03 – Calculating the area of a circle

Example:

Calculate the area of the circle below correct to 3 significant figures. A=πr2

Worked Solution:

Use the formula for finding the area of a circle A=πr2

Divide the diameter by 2 to calculate the radius

5.72 cm÷2=2.86 cm

A=π×2.862

A=π×2.86 ×2.86= 25.69697127

A=25.7 cm2  (to 3 s.f.)


Your turn:

Calculate the area of the circle below correct to 3 significant figures. A=πr2

Enter your answer here:

Other questions in this topic:

Need some extra help? Find a tutor now

Or, call 020 3633 5145