SOLUTION: In the two concentric circles with center O, the radius of the large circle is twice the radius of the small circle.What is the ratio of the area of the small circle to the area of

Algebra ->  Circles -> SOLUTION: In the two concentric circles with center O, the radius of the large circle is twice the radius of the small circle.What is the ratio of the area of the small circle to the area of      Log On


   

Question 338814: In the two concentric circles with center O, the radius of the large circle is twice the radius of the small circle.What is the ratio of the area of the small circle to the area of the large circle?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The area of the smaller circle is,
A1=pi%2AR%5E2.
The area of the larger circle is,
A2=pi%282R%29%5E2=4%2Api%2AR%5E2
The ratio is then,
highlight%28A2%2FA1=4%29