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Question-194131




Question Number 194131 by cortano12 last updated on 28/Jun/23
Commented by BaliramKumar last updated on 28/Jun/23
25
$$\mathrm{25} \\ $$
Answered by MM42 last updated on 28/Jun/23
(2r)^2 −r^2 =25⇒r^2 =((25)/3)  s=3r^2 ⇒s=25 ✓
$$\left(\mathrm{2}{r}\right)^{\mathrm{2}} −{r}^{\mathrm{2}} =\mathrm{25}\Rightarrow{r}^{\mathrm{2}} =\frac{\mathrm{25}}{\mathrm{3}} \\ $$$${s}=\mathrm{3}{r}^{\mathrm{2}} \Rightarrow{s}=\mathrm{25}\:\checkmark \\ $$$$ \\ $$

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