Find Radius from Area Worksheets
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More Math Worksheets
More Printable Math Worksheets
7th Grade Math
There are six sets of circle worksheets:
- Circumference Worksheets
- Area of Circle Worksheets
- Area & Circumference Worksheets
- Find Radius from Circumference
- Find Radius from Area
- Find Area from Circumference or vice versa
Examples, solutions, videos, and worksheets to help grade 7 and grade 8 students learn how to find the radius from the area of a circle.
How to find the radius from area of a circle?
There are two sets of radius from area of circle worksheets
- Radius from area of circles (inches, ft, yard)
- Radius from area of circles (mm, cm)
To find the radius of a circle given its area, you can rearrange the formula for the area:
A = πr2
Solve for the radius (r):
r = √(A/π)
Where:
r is the radius of the circle.
A is the area of the circle.
π (pi) is a mathematical constant approximately equal to 3.14159…
Example:
Find the radius of a circle with a area of 113.04 units2. Use 3.14 for π.
r = √(113.04/π) = 6 units
Have a look at this video if you need to review how to find the radius from area of a circle.
Click on the following worksheet to get a printable pdf document.
Scroll down the page for more Radius from area of circle Worksheets.
More Radius from area of circle Worksheets
Printable
(Answers on the second page.)
Radius from area of circle Worksheet #1 (inches, feet, yard)
Radius from area of circle Worksheet #2 (mm, cm)
Online
Circumference of Circle
Area of Circle
Area & Circumference of Circle
Circle Problems: Circumference, Area
Circle Word Problems 1
Circle Word Problems 2
Area of shaded regions that include circles
Area of figures that include circles
Area of figures that include circles
Arc Length & Area of Sector (Degrees)
Arc Length & Area of Sector (Radians)
Convert between Radians and Degrees
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