how many circleswith radius 2 cm will have the sametotal area as a circle with the radius 4 cm ?

please help i am confused

A = pi*r^2

A = 3.14 * 2^2
A = 3.14 * 4
A = 12.56 sq. cm

A = 3.14 * 4^2
A = 3.14 * 16
A = 50.24

50.24 / 12.56 = ?