Main content

## Area and circumference of circles

# Radius, diameter, & circumference

CCSS Math: 7.G.B.4

Learn the relationship between the radius, diameter, and circumference of a circle.

Sort by:

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

CCSS Math: 7.G.B.4

Learn the relationship between the radius, diameter, and circumference of a circle.

Sort by: