Question

the diameter of a circle is 38 millimeters. what is the circles area?
round your answer to the nearest hundredth.
____ square millimeters

Explanation:

Step1: Calculate the radius

$r = \frac{d}{2} = \frac{38}{2} = 19$ mm

Step2: Apply circle area formula

$A = \pi r^2 = \pi \times 19^2$

Step3: Compute and round the value

$A = 361\pi \approx 361 \times 3.1416 \approx 1134.11$

Answer:

1134.11 square millimeters