If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Area of a segment of a circle

You might need: Calculator


A circle with radius 5cm has a segment with a central angle of 90°.
What is the area of the segment?
Enter your answer in terms of π.