Răspuns:
Explicație pas cu pas:
MN=(BC+AD)/2
2MN=7+AD
2*11=7+AD
7+AD=22
AD= 22-7
AD=15cm
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Răspuns:
Explicație pas cu pas:
MN=(BC+AD)/2
2MN=7+AD
2*11=7+AD
7+AD=22
AD= 22-7
AD=15cm