Question

a circle has radius 12 millimeters. what is its area? use 3.14 for π. show your work.

Explanation:

Step1: Recall area formula

The formula for the area of a circle is $A = \pi r^{2}$, where $r$ is the radius.

Step2: Substitute values

Given $r = 12$ mm and $\pi=3.14$, we substitute into the formula: $A=3.14\times12^{2}$.

Step3: Calculate $12^{2}$

$12^{2}=12\times12 = 144$.

Step4: Multiply by $\pi$

$A = 3.14\times144=452.16$ square - millimeters.

Answer:

$452.16$ square millimeters