If the radius of a circle is $77\ cm$, find the circumference of the circle.

 Given: The radius of a circle is $77\ cm$.


To do: To find the circumference of the circle.

Solution:

As given, radius $r=77\ cm$

So, circumference $=2 \pi r$

$=2\pi \times 77$

$=2\times \frac{22}{7}\times 77$

$=2\times 22\times 11$

$=44\times 11$

$=484\ cm$

Thus, circumference of the circle is $484\ cm$.

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Updated on: 10-Oct-2022

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