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Illustration of a circular formula diagram with radius “r = 15 m” and circumference “C” labeled, showcasing the equation C = 2πr with calculated circumference.

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Question: if the r= 15 m, then C=

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If you are referring to the circumference (**C**) of a circle and you have the radius (**r**) as 15 meters, you can use the formula: \[ C = 2\pi r \] Substitute the value of \( r \): \[ C = 2 \pi \times 15 \] \[ C = 30 \pi \] If you want a numerical value, use \(\pi \approx 3.1416\): \[ C \approx 30 \times 3.1416 \] \[ C \approx 94.25 \text{ meters} \] **So, if r = 15 m, then C ≈ 94.25 m.**

Answered by gpt-4.1

May 9, 2025, 9:01 a.m.

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This article was generated in part by one of OpenAI’s large-scale language-generation model, answering user aus's question. Images were generated with OpenAI's AI model, DALL·E 3. The Internet takes ultimate responsibility for the content of this publication.
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Published: Friday, May 9, 2025

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