AB=15;BC=7;CD=13:BK=12;AK=9,KD=12
S—?
AD=AK+KD=9+12=21
S=BC+AD/2 × BK= 7+21/2 × 12= 28/2 × 12 = 14×12=168(см²)
Ответ:168 см²
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AB=15;BC=7;CD=13:BK=12;AK=9,KD=12
S—?
AD=AK+KD=9+12=21
S=BC+AD/2 × BK= 7+21/2 × 12= 28/2 × 12 = 14×12=168(см²)
Ответ:168 см²