# What Is the Circumference of a Circle with a Radius of 2.1 Meters?

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The circumference of a circle with a radius of 2.1 meters is 4.2 times Pi meters. Find out about the circumference of a circle with a radius of 2.1 meters with help from an expert in computers, with two degrees in both Computer Science and Applied Mathematics from the New Jersey Institute of Technology, in this free video clip.

Part of the Video Series: Math Skills
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## Video Transcript

Hi, my name's Stefan. Today, I'm gonna speak on what is the circumference of a circle with radius 2.1 meters. Okay, we have our r equals 2.1 meters, and we have our circle here, r, and our c is equivalent to two pi r, so when we put that in, our circumference is equivalent to two times 2.1 pi, so that equals 4.2 pi meters. And there's your circumference 4.2 times pi meters.

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