Radius & Diameter, Circumference & Area

Circles: Radius, Diameter, Circumference, Area

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Grade Level Estimation

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Print out these worksheets on circles.  Practice naming circles and calculating circumference, radius, diameter, and area of a circle.

Click on the the core icon (Common Core) below specified worksheets to see connections to the Common Core Standards Initiative.

Circumference and Area (Intermediate)

Circumference of a Circle 1 Free

The diameter of each circle is shown.  Students must calculate the circumference, or the distance around the circle.

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Circumference of a Circle 2 Member

The radius of each circle is drawn. Pupils must figure out the distance around the edge of the circle, or circumference.

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Circumference of a Circle 3 Member

Each circle picture shows a radius or diameter.  Students must use this information to figure out the circumference.

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Finding Pi Project Member

Students measure various circular objects and divide the circumference by the diameter to get pi.

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Circle Questions Member

Students answer the short answer questions about circles, circumference, and pi.

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Area of a Circle 1 Member

A radius is drawn on each circle shape.  Find the area of the circle.

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Area of a Circle 2 Member

Either the diameter or the radius is shown on each shape. Calculate the area for each.

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Area of a Circle 3 Member

Use the formula pi-r-squared to calculate the area of each circle.

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Area of a Circle 4 Member

Determine the area of each circle. Includes a sample problem at the top.

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Area and Circumference Member

Students will need to find both the area and circumference for each circular shape.

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Pi Song Member

When your students sing the pi song, they'll never forget how to calculate the circumference and area of a circle.

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Radius and Diameter (Basic)

Naming the Radius & Diameter Free

Can you name the diameter and diameter of each of these circles?

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Calculate Radius & Diameter of Circles Free

Find the radius and diameter of these circles.

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Another Radius & Diameter Worksheet Member

Find the diameter and radius of  each circle.  Also, figure out which circles are the largest, which are the smallest, and which are the same size.

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Radius, Diameter, and Circumference Member

Determine the diameter, radius, and circumference of each of these circles.

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