Question

1. find the circumference. 3 in.

Explanation:

Step1: Identify given value

The diameter of the circle is $d = 3$ in.

Step2: Recall circumference formula

The formula for circumference using diameter is $C = \pi d$.

Step3: Substitute and calculate

Substitute $d=3$ into the formula:
$C = \pi \times 3 = 3\pi$ in.
If using $\pi \approx 3.14$, $C \approx 3 \times 3.14 = 9.42$ in.

Answer:

$3\pi$ inches (or approximately 9.42 inches)