Question Number 104371 by quvonchbek3737 last updated on 21/Jul/20
Answered by john santu last updated on 21/Jul/20
Commented by john santu last updated on 21/Jul/20
$${area}\:{I}\:+\:{II}\:=\:{area}\:\Delta \\ $$$${area}\:\Delta\:=\:\frac{\mathrm{1}}{\mathrm{4}}\left(\mathrm{10}\right)^{\mathrm{2}} \sqrt{\mathrm{3}}\:=\:\mathrm{25}\sqrt{\mathrm{3}}\: \\ $$$$\left({JS}\:\circledast\right) \\ $$