If the radius of a circle is $49\ cm$, find the circumference of the circle.

Given: The radius of a circle is $49\ cm$.

To do: To find the circumference of the circle.

Solution:

As given, radius $r=49\ cm$

So, circumference $=2 \pi r$

$=2\pi \times 49$

$=2\times \frac{22}{7}\times 49$

$=2\times 22\times 7$

$=44\times 7$

$=308\ cm$

Thus, circumference of the circle is $308\ cm$ .

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Updated on: 10-Oct-2022

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