Final answer:
The circumference of a circle with a radius of 3 is 6π when expressed exactly in terms of π, or approximately 18.84 if using 3.14 as an approximation for π.
Step-by-step explanation:
To find the circumference of a circle with a radius of 3, we can use the formula C = 2πr, where π (pi) is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle. As specified, we can use either an exact answer in terms of π or use the approximate value of 3.14 for π.
Using π, the exact circumference is calculated as:
C = 2π(3) = 6π
Using the approximate value of 3.14 for π, we calculate the circumference as:
C = 2 × 3.14 × 3 = 18.84
Therefore, the circumference of the circle can either be expressed exactly as 6π or approximately as 18.84, if using the numerical approximation of π.