Ответ: 7 cm
Объяснение:
OO1= (AD+BC)/2 => 2*OO1= AD+BC => AD+BC= 2*9=18
=> AB+CD= P-(AD+BC)= 32-18=14 cm
=> AB=CD = 14/2=7 cm
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Verified answer
Ответ: 7 cm
Объяснение:
OO1= (AD+BC)/2 => 2*OO1= AD+BC => AD+BC= 2*9=18
=> AB+CD= P-(AD+BC)= 32-18=14 cm
=> AB=CD = 14/2=7 cm