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 circle

You might need: Calculator

Problem

Find the area of a circle with a circumference of 12.56 units.
  • Your answer should be
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
units2
Stuck?
Stuck?