CD=AB=12.
tgCAD=CD/AD=0,36
AD=CD/0,36=12/0,36= 12× 9/25= 108/25
S= 12 × 108/25 = 1296/25=51,84.
Ответ: 51,84.
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CD=AB=12.
tgCAD=CD/AD=0,36
AD=CD/0,36=12/0,36= 12× 9/25= 108/25
S= 12 × 108/25 = 1296/25=51,84.
Ответ: 51,84.