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If a circle has the diameter of 8, what is the circumference?
Given: Diameter of the circle is $8\ cm$.
To do: To find the circumference.
Solution:
As given, diameter $=8\ cm$
$\therefore$ Radius of circle$=\frac{Diameter}{2}=\frac{8}{2}=4$
Circumference$=2\pi r=2\pi( 4)=8\pi$
$=8\times\frac{22}{7}$
$=\frac{176}{7}$
$=25.14$
Thus, the circumference is $25.14\ cm$.
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