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what is the circumference of a circle with an area of 530.93m^2?

What Is The Circumference Of A Circle With An Area Of 53093m2 class=

Sagot :

We know that the area of a circle is:

[tex]A=\pi r^2[/tex]

If pi is equal to 3.14 then we can find the radius of the circle so:

[tex]\begin{gathered} 530.93=3.14r^2 \\ \frac{530.93}{3.14}=r^2 \\ 169=r^2 \\ \sqrt[]{169}=r \\ 13=r \end{gathered}[/tex]

now with the radus wwe can calculate the circunference so:

[tex]\begin{gathered} C=2\pi r \\ C=2\cdot3.14\cdot13 \\ C=81.68 \end{gathered}[/tex]

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