Final answer:
The circumference of a circle with a radius of 4 is approximately 25.12.
Step-by-step explanation:
The formula to find the circumference of a circle is C = 2πr, where r is the radius of the circle. In this case, the radius is 4. Plugging in the value of 4 into the formula, we get: C = 2π(4) = 8π. To simplify the answer, we can use an approximation of π as 3.14, so the circumference is approximately 8(3.14) = 25.12.