Find the circumference of a circle with radius 7 cm. Use pi = 22/7

Step 1: Recall the formula for circumference

The circumference of a circle is the distance around its edge. It can be calculated using the formula $C = 2\pi r$, where $C$ is the circumference, $\pi$ (pi) is a mathematical constant, and $r$ is the radius of the circle.

Step 2: Substitute the given values

We are given that the radius $r = 7 \text{ cm}$ and we need to use $\pi = \frac{22}{7}$. Substitute these values into the circumference formula.

Step 3: Calculate the circumference

Perform the multiplication. The $7$ in the numerator and the $7$ in the denominator cancel out, simplifying the calculation to $2 \times 22 = 44$.

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