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What is the answer? just the last circle please and thank you

What is the answer? just the last circle please and thank you-example-1

1 Answer

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To find the circumference of a circle we use the formula


c=2\cdot\pi\cdot r

according to the circle ir has a radius of 35/2m.

Insert the data in the formula and use 22/7 as the approximation of pi


\begin{gathered} c=2\cdot(22)/(7)\cdot(35)/(2)m \\ c=(22)/(7)\cdot35m \\ c=(770)/(7)m \\ c=110m \end{gathered}

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