Question

The area of a circle is 50.24 square meters. What is the circle's circumference?
Use 3.14 for ​pi

Answer 1

$ac = \pi \: r { }^{2} \\ 50.24 = 3.14 \times r {}^{2} \\ r {}^{2} = 16 \\ r = 4 \\ \\ \\ then \\ cc = 2\pi \: r \\ 2\times 4\times \pi \\ 8\pi$