Question

the radius of a circle is 19 millimeters. what is the circles area?
r=19 mm
round your answer to the nearest hundredth.

Explanation:

Step1: Recall circle area formula

$A = \pi r^2$

Step2: Substitute radius $r=19$

$A = \pi \times 19^2$

Step3: Calculate $19^2$

$19^2 = 361$

Step4: Compute and round to hundredth

$A = \pi \times 361 \approx 1134.11$

Answer:

1134.11 square millimeters