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Find the circumference of a circle with a diameter of meters. Use as an approximation for . Round your answer to the nearest whole meter. Enter only the number.

Find the circumference of a circle with a diameter of meters. Use as an approximation-example-1
User Mantu
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Solution:

The circumference of a circle is expressed as


\begin{gathered} circumference=\pi* d \\ where\text{ d}\Rightarrow diameter\text{ of the circle} \end{gathered}

Given that the diameter of the circle is 13 meters, we have


d=13

By substitution, we have


\begin{gathered} circmference=\pi*13 \\ where\text{ }\pi=3.14 \\ thus, \\ circumference=3.14*13 \\ =40.82 \\ \therefore \\ circumference\approx41\text{ meters} \end{gathered}

Hence, the circumference of the circle, to the nearest meter, is


41

User Xmindz
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