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How many inches are in the circumference of a great circle of a sphere which has surface area of \(196\pi \) sq in? Express your answer in terms of \(\pi\).

 Aug 17, 2022
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The formula for the radius of the sphere is \(4 \pi r^2\). We know that this is equal to \(196 \pi\). Setting these equal and solving for r, we find that \(r = 7\), meaning the circumference is \(2 \pi r = \color{brown}\boxed{14 \pi}\)

 Aug 17, 2022

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