Question

the radius of a circle is 11 millimeters. what is the circles area?
round your answer to the nearest hundredth.
____ square millimeters

Explanation:

Step1: Recall circle area formula

The area $A$ of a circle is given by $A = \pi r^2$, where $r$ is the radius.

Step2: Substitute radius value

Substitute $r = 11$ mm into the formula:
$A = \pi (11)^2$

Step3: Calculate squared radius

$11^2 = 121$, so $A = 121\pi$

Step4: Compute numerical value

Use $\pi \approx 3.14159$:
$A \approx 121 \times 3.14159 = 379.94239$

Step5: Round to nearest hundredth

Round $379.94239$ to two decimal places: $379.94$

Answer:

379.94 square millimeters