# Find Radius from Circumference Worksheets

There are six sets of circle worksheets:

Examples, solutions, videos, and worksheets to help grade 7 and grade 8 students learn how to find the radius from the circumference of a circle.

### How to find the radius from circumference of a circle?

There are two sets of radius from circumference of circle worksheets

• Radius from circumference of circles (inches, ft, yard)
• Radius from circumference of circles (mm, cm)

To find the radius of a circle given its circumference, you can rearrange the formula for the circumference:

C = 2πr

Solve for the radius (r):

r = C/(2π)

Where:

r is the radius of the circle.
C is the circumference of the circle.
π (pi) is a mathematical constant approximately equal to 3.14159…

Example:
Find the radius of a circle with a circumference of 50.24 units. Use 3.14 for π.
r = 50.24/(2 · 3.14) = 8 units

Have a look at this video if you need to review how to find the radius from circumference of a circle.

Click on the following worksheet to get a printable pdf document.
Scroll down the page for more Radius from circumference of circle Worksheets.

### More Radius from circumference of circle Worksheets

Printable
(Answers on the second page.)
Radius from circumference of circle Worksheet #1 (inches, feet, yard)
Radius from circumference of circle Worksheet #2 (mm, cm)

More Printable Worksheets

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