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Question-180623




Question Number 180623 by cortano1 last updated on 14/Nov/22
Answered by HeferH last updated on 14/Nov/22
(R + r)^2 = r^2  + 4r^2    ((2r)/R) = ((1 + (√3))/2)
$$\left({R}\:+\:{r}\right)^{\mathrm{2}} =\:{r}^{\mathrm{2}} \:+\:\mathrm{4}{r}^{\mathrm{2}} \\ $$$$\:\frac{\mathrm{2}{r}}{{R}}\:=\:\frac{\mathrm{1}\:+\:\sqrt{\mathrm{3}}}{\mathrm{2}} \\ $$$$\: \\ $$

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