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Question Number 150789 by cherokeesay last updated on 15/Aug/21

Answered by nimnim last updated on 15/Aug/21

$$\frac{1}{\sqrt{r}}=\frac{1}{\sqrt{R}}+\frac{1}{\sqrt{R}}\Rightarrow \frac{1}{\sqrt{r}}=\frac{1}{2}+\frac{1}{2}$$$$\Rightarrow r=1$$$$S_{area}=\pi {\left(1\right)}^2=\pi {cm}^2$$

Commented by cherokeesay last updated on 15/Aug/21

$$thanks!$$

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