Question

The area of a circle is 379.94 square millimeters. What is the circle's circumference?

Answer 1

Answer:

C = 69.0975169686 mm

Step-by-step explanation:

$A = r^{2} \pi = 379.94 \\\\r = \sqrt{\frac{A}{\pi}} = \sqrt{\frac{379.94}{\pi } } = 10.9972113809\\\\C = 2r\pi = 69.0975169686$