What is the circumference of a circle with a radius of 7 cm?

To determine the circumference of a circle, the formula used is ( C = 2\pi r ), where ( r ) represents the radius of the circle. Given that the radius of the circle is 7 cm, we can substitute this value into the formula.

Calculating the circumference:

1. First, multiply the radius by 2:

( 2 \times 7 , \text{cm} = 14 , \text{cm} ).

2. Next, multiply this result by ( \pi ) (approximately 3.14):

( C = 14 , \text{cm} \times 3.14 \approx 43.96 , \text{cm} ).

When rounding this value, it is reasonable to consider it as approximately 44 cm. Therefore, the correct answer represents the closest approximation to the calculated circumference.

This understanding highlights that, although other options may be calculations of different circles or could stem from misapplying the formula, 44 cm is the accurate representation of the circumference for a circle with a radius of 7 cm, rounding naturally aligns with the typical approximations used in geometry.