calculate circumference of circle with radius 7
Check the final answer first, then review the worked steps.
Problem
calculate circumference of circle with radius 7
Step-by-step solution
The circumference $C$ of a circle is given by $C = 2\pi r$. With $r = 7$ cm and using $\pi \approx \frac{22}{7}$, we get $C = 2 \times \frac{22}{7} \times 7 = 44$ cm.
Answer
44 \text{ cm}