If the radius of a circle is $7\ cm$. find the circumference of the circle.

Academic Mathematics NCERT Class 10

Given: The radius of a circle is $7\ cm$.

To do: To find the circumference of the circle.

Solution:

As given, radius $r=7\ cm$

So, circumference $=2 \pi r$

$=2\pi \times 7$

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

$=2\times 22\times 1$

$=44\times 1$

$=44\ cm$

Thus, circumference of the circle is $44\ cm$.

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Updated on: 10-Oct-2022

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