What is the circumfrence of a circle with a diameter = 4? which of the following is the best estimation for the circumfrence

Answer 1

To find the circumference of a circle, you can use the formula:

\[ C = \pi d \]

where \( C \) is the circumference and \( d \) is the diameter of the circle.

Given that the diameter \( d = 4 \):

\[ C = \pi \times 4 \approx 3.14 \times 4 \approx 12.56 \]

The best estimation for the circumference, when rounded, would be approximately 13. If you're looking for an integer approximation, you would say the circumference is about 13.