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The diameter of a circle is 15 yd what is its circumference?

User Ecantu
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The circumference of a circle can be calculated by;


\begin{gathered} C=2\pi r\text{ (when radius is given)} \\ C=\pi d\text{ (when diameter is given)} \\ S\text{ince we were given diameter in the question, then we use } \\ C=\pi d \\ \text{where d=15yd (given)} \\ \pi=3.14 \\ C=3.14*15 \\ C=47.1\text{ yards} \end{gathered}

Therefore, the circumference of the circle is 47.1 yards.

User Oleksandr Shmyrko
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