What is the circumference of the circle

The **circumference** of a circle is the distance around the circle. It can be calculated using one of the following formulas, depending on the information you have: 1. **Using the Radius (r):** \[ \text{Circumference} = 2\pi r \] 2. **Using the Diameter (d):** \[ \text{Circumference} = \pi d \] **Where:** - \( \pi \) (pi) is approximately 3.14159. - \( r \) is the radius of the circle. - \( d \) is the diameter of the circle (which is twice the radius, \( d = 2r \)). --- ### **Example Calculation** If you have a circle with a radius of 5 units: \[ \text{Circumference} = 2 \times \pi \times 5 = 10\pi \approx 31.42 \text{ units} \] --- If you provide the radius or diameter of your specific circle, I can help calculate its circumference for you!