Question

the area of circle w is 16? and the area of circle z is 4?. what is the ratio of the circumference of w to the circumference of z ?

Answer 1

Please find the attached answer below..

Answer 2

let radius of circle to be w and z respectively
$so \: \: 2\pi {w}^{2} \: = 16 \\ and \: 2\pi {z}^{2} = 4 \\ no \: devide \: both \: equation \: \frac{2\pi {w}^{2} }{2\pi {z}^{2} } = \frac{16}{4 } \\ \frac{ {w}^{2} }{ {z}^{2} } = 4 \\ \frac{w}{z} = 2 \\ so \: ratio \: of \: their \: circumfrence \: is \: 2 \: isto \: 1$