Question

to the nearest hundredth, what is the circumference of a circle with a radius of 4 units? a. 50.27 units b. 201.06 units c. 25.13 units d. 12.57 units

Explanation:

Step1: Recall circumference formula

The formula for the circumference of a circle is $C = 2\pi r$, where $r$ is the radius.

Step2: Substitute radius value

Substitute $r = 4$ into the formula:
$C = 2\pi \times 4 = 8\pi$

Step3: Calculate numerical value

Use $\pi \approx 3.1416$:
$C \approx 8 \times 3.1416 = 25.1328$

Step4: Round to nearest hundredth

Round $25.1328$ to two decimal places: $25.13$

Answer:

C. 25.13 units