Ratio of the circumferences of two circles is
. What is the ratio of their areas?
(A)
(B)
(C)
(D)
(E) None of the above
Let radius of the first circle
Let radius of the second circle
It is given to us that ratio of the circumferences
Ratio of their areas
Hence, the answer is (C).
We can directly use the result. If, the ratio of circumferences of two circles is
then the ratio of their areas is
.
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