Free Printable Circle Relationships

Worksheets

Name

Class

Date

What is the formula for circumference?

C = π d

C = π d²

C = π r

C= π r²

What is the formula for area?

A = π d

A = π d²

A = π r

A = π r²

What is the ratio of π in terms of circumference and diameter?

d / C

C / d

3.14

22 / 7

Which of these is a true statement?

Radius of 3 ft = Diameter of 9 ft

Radius of 4 in = Diameter of 2 in

Diameter of 12 m = Radius of 6 m

Diameter of 10 yd = Radius of 5 yd²

The measure above is the _________.

Radius

Diameter

Area

Circumference

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