Homework Help: Math

Posted by Grace on Tuesday, July 31, 2012 at 8:14pm.

The radius of the small circle A is one-half the radius of the large circle B.WHat is the ratio of the area of the small circle to the area of the large circle?

Math - Reiny, Tuesday, July 31, 2012 at 10:18pm
Why not just pick two values of r
say: r = 3 and r = 6
area of small = 9π
area of larger = 36π

You will find that the ratio of small circle : large circle = 1 : 4 , no matter what numbers you pick

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