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Circumference - Radius and Pi Definition to Equation (Symbols) (Level 1)

This math topic centers on calculating the circumference of a circle using the formula \(C = 2\pi r\). It involves substituting given radii into the circumference formula and applying knowledge of \(\pi\), allowing for the practice of basic arithmetic and usage of mathematical symbols. The problems provide various radii measurements, challenging students to correctly compute the circumference for each scenario. Multiple-choice answers further test understanding by having students select the correct formula application among other varied expressions. This introductory level geometry topic reinforces understanding of circle properties and the application of \(\pi\) in practical contexts.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Circumference - Radius and Pi Definition to Equation (Symbols)

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Given this information, what is the circumference of this circle

C=2⋅π⋅rradius=5C = 2 \cdot \pi \cdot r\\\\radius = 5

Circumference - Radius and Pi Definition to Equation (Symbols) Worksheet

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Math worksheet on 'Circumference - Radius and Pi Definition to Equation (Symbols) (Level 1)'. Part of a broader unit on 'Geometry - Circle Circumference - Intro' Learn online: app.mobius.academy/math/units/geometry_circles_perimeter_intro/
1
Given this information, what is the circumference of this circle
A LaTex expression showing C = 2 times Pi times r\\\\radius = 2
a A LaTex expression showing C = 2 times Pi times 2
b A LaTex expression showing C = Pi times (0 over 2 ) to the power of 2
c A LaTex expression showing C = Pi times (2 over 2 ) to the power of 2
d A LaTex expression showing C = Pi times 2 to the power of 2
e A LaTex expression showing C = Pi times 1 to the power of 2
f A LaTex expression showing C = Pi over 3
2
Given this information, what is the circumference of this circle
A LaTex expression showing C = 2 times Pi times r\\\\radius = 6
a A LaTex expression showing C = Pi over 6
b A LaTex expression showing C = 2 times Pi times 6
c A LaTex expression showing C = Pi times 3
d A LaTex expression showing C = Pi times 8
e A LaTex expression showing C = Pi over 3
f A LaTex expression showing C = Pi times 6
3
Given this information, what is the circumference of this circle
A LaTex expression showing C = 2 times Pi times r\\\\radius = 10
a A LaTex expression showing C = Pi times 5
b A LaTex expression showing C = Pi times 13 to the power of 2
c A LaTex expression showing C = Pi times (14 over 2 ) to the power of 2
d A LaTex expression showing C = 2 times Pi times 10
e A LaTex expression showing C = Pi times 5 to the power of 2
f A LaTex expression showing C = Pi over 14
4
Given this information, what is the circumference of this circle
A LaTex expression showing C = 2 times Pi times r\\\\radius = 12
a A LaTex expression showing C = Pi over 12
b A LaTex expression showing C = Pi times 6 to the power of 2
c A LaTex expression showing C = 2 times Pi times 12
d A LaTex expression showing C = Pi over 8
e A LaTex expression showing C = Pi times 12 to the power of 2
f A LaTex expression showing C = Pi times 15
5
Given this information, what is the circumference of this circle
A LaTex expression showing C = 2 times Pi times r\\\\radius = 4
a A LaTex expression showing C = Pi times 5 to the power of 2
b A LaTex expression showing C = Pi over 4
c A LaTex expression showing C = Pi times 2 to the power of 2
d A LaTex expression showing C = 2 times Pi times 4
e A LaTex expression showing C = Pi over 2
f A LaTex expression showing C = Pi times 4
6
Given this information, what is the circumference of this circle
A LaTex expression showing C = 2 times Pi times r\\\\radius = 11
a A LaTex expression showing C = Pi times 12
b A LaTex expression showing C = 2 times Pi times 11
c A LaTex expression showing C = Pi times 12 to the power of 2
d A LaTex expression showing C = Pi over 6
e A LaTex expression showing C = Pi times 8
f A LaTex expression showing C = Pi times 11
7
Given this information, what is the circumference of this circle
A LaTex expression showing C = 2 times Pi times r\\\\radius = 8
a A LaTex expression showing C = Pi times 6 to the power of 2
b A LaTex expression showing C = Pi times 6
c A LaTex expression showing C = Pi times 12 to the power of 2
d A LaTex expression showing C = Pi times 4 to the power of 2
e A LaTex expression showing C = Pi times 7
f A LaTex expression showing C = 2 times Pi times 8