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Two concentric circles $P$ and $Q$ have radii $r$ and $R$, $r<R$. If a
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18 Jan 2025, 00:40
18 Jan 2025, 00:40
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Two concentric circles $P$ and $Q$ have radii $r$ and $R$, $r<R$. If area of the smaller circle is equal to the difference in the areas of the two circles, which of the following expresses r in terms of $\(R\)$ ?
(A) $\(\frac{R}{4}\)$
(B) $\(\frac{R}{3}\)$
(C) $\(\frac{R}{2}\)$
(D) $\(\frac{R}{\sqrt{2}}\)$
(E) $\(\quad R \sqrt{2}\)$
(A) $\(\frac{R}{4}\)$
(B) $\(\frac{R}{3}\)$
(C) $\(\frac{R}{2}\)$
(D) $\(\frac{R}{\sqrt{2}}\)$
(E) $\(\quad R \sqrt{2}\)$
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Two concentric circles $P$ and $Q$ have radii $r$ and $R$, $r<R$. If a [#permalink]
18 Jan 2025, 00:40
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