You can put this solution on YOUR website! If the ratio of the circles A and B is 4.
What is the ratio of the radii of A and B?
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Let the radius of A be "x".
Let the radius of B be "y".
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Equation:
(pi)a^2/(pi/b^2) = 4/1
a^2/b^2 = 4/1
(a/b) = 2/1
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Cheers,
Stan H.