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.
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Given this information, what is the circumference of this circle