What is The AREA of RED Square I AYT SAT Geometry 01E

[@Karamathandphysics]

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[@salihturkan]

Very good sir

[@murdock5537]

Nice, many thanks, Sir!
∎GFED → GF = FE = DE = GD = a; ∆ ABC → AB = 5; BC = 4; AC = 3; sin⁡(BCA) = 1; ABC = DEC = GDA = δ →
sin⁡(δ) = 3/5 → BE = 5a/3 → CE = 4a/5 → 4 = 5a/3 + 4a/5 = 37a/15 → a = 60/37

[@Karamathandphysics]

many thanks, too🥰