Question

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

Answer 1

A=3.14,

πr²=π

r²=1

r=1

circumference of circle=2πr=2×3.14×1=6.28mile

Answer 2

$area \: of \: circle \: = \pi \: r {}^{2} \\ 3.14 = 3.14 \times r {}^{2} \\ 1 = r \\ \\ \\ then \\ coc = 2\pi \: r \\ 2 \times 3.14 \times 1 \\ 6.28$