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Circle Worksheets

This generator makes worksheets for calculating the radius, diameter, circumference, or area of a circle, when one of those is given (either radius, diameter, circumference, or area is given). You can choose to have metric or customary units, or both. You can choose to include simple circle images in the problem, or not, or randomly have some problems have circle images and some not. You can also make the script use either 3.14 or 3.1416 as a value of Pi in the calculations, and to choose the rounding accuracy for the answers. Please change the different options to see what their effect is.

After you have generated a worksheet, you can just refresh the page from your browser window (or hit F5) to get another worksheet with different problems but using the same options.

All worksheets come with an answer key.  You can print the worksheet directly from your browser, or save it on disk using the "Save as" command of your browser.  If the problems on the worksheet don't fit the page or there is not enough working space, choose a smaller font, less cellpadding, or fewer columns of problems.

Some quick links:

Radius/diameter practice: calculate radius when diameter is given or vice versa

Find the circumference when either radius or diameter is given

Find the area of the circle when either radius or diameter is given

Find the area or the circumference when either radius or diameter is given

Mixed practice of all the "basics": either radius or diameter is given, calculate area/circumference/radius/diameter

Calculate diameter/radius/area when circumference is given

Challenges: find the radius/diameter/circumference/area when area or circumference is given (often requires usage of square root)

Circle Worksheets Bandera de espana
Columns:   Rows:
(These determine the number of problems)

Workspace: empty lines

Use metric units (mm, cm, m, km, mm2, cm2, m2, km2)
Use customary units (in, ft, yd, mi, in2, ft2, yd2, mi2)

Use Pi = 3.14 in calculations
Use Pi = 3.1416 in calculations
Use Pi = 3.14159265 in calculations

Round the answer to decimal digits

Use circle images in all problems.
Do not use circle images in any problems.
Use circle images in some problems (randomly).


Choose problem types. Tick at least one box.

The radius is given. Calculate the diameter of the circle.
The circumference is given. Calculate the diameter of the circle.
The area is given. Calculate the diameter of the circle.

The diameter is given. Calculate the radius of the circle.
The circumference is given. Calculate the radius of the circle.
The area is given. Calculate the radius of the circle.

The radius is given. Calculate the circumference of the circle.
The diameter is given. Calculate the circumference of the circle.
The area is given. Calculate the circumference of the circle.

The radius is given. Find the area of the circle.
The diameter is given. Find the area of the circle.
The circumference is given. Find the area of the circle.

Font:     Font Size:

Cell Padding:  


Additional title & instructions  (HTML allowed)


 


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Here is a non-intimidating way to prepare students for formal geometry. Key to Geometry workbooks introduce students to a wide range of geometric discoveries as they do step-by-step constructions. Using only a pencil, compass, and straightedge, students begin by drawing lines, bisecting angles, and reproducing segments. Later they do sophisticated constructions involving over a dozen steps-and are prompted to form their own generalizations. When they finish, students will have been introduced to 134 geometric terms and will be ready to tackle formal proofs.

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