Question - Calculating the Circumference of a Circle Using a Given Diameter

Given that the diameter $d = 2r$, and $ \pi = \frac{22}{7} $, we can find the circumference $C$ of a circle using the formula:

$ C = \pi d $

Substituting the given values:

$ C = \frac{22}{7} \times d $

Now, replace $d$ with the given diameter value to find the circumference.