Question

PLEASE HELP! Circle A has a radius five times longer than the radius of circle B.
Which gives the ratio between the area of circle A and the area of circle B?
5 : 1
10 : 1
25 : 1
10π : 1
25π : 1

Answer 1

\[\frac{ Area~A }{ Area~B }=\frac{ \pi (5r)^2 }{ \pi r^2 }=?\]