Question

suppose the diameter of a circle is 4 units. what is its circumference? use 3.14 for π and enter your answer as a decimal.

Explanation:

Step1: Recall the formula for the circumference of a circle.

The formula for the circumference \( C \) of a circle when the diameter \( d \) is known is \( C = \pi d \).

Step2: Substitute the given values into the formula.

We are given that the diameter \( d = 4 \) units and \( \pi = 3.14 \). Substituting these values into the formula, we get \( C = 3.14 \times 4 \).

Step3: Perform the multiplication.

\( 3.14 \times 4 = 12.56 \).

Answer:

12.56