👤

VAAAAAAAA ROOOOOOOOOOOOOOOGGGGGGGGGGGGGGG DAAU COROANAAAAAAAAAAAAAAAAAA

VAAAAAAAA ROOOOOOOOOOOOOOOGGGGGGGGGGGGGGG DAAU COROANAAAAAAAAAAAAAAAAAA class=

Răspuns :

Răspuns:

Explicație pas cu pas:

A FEC = 3 cm²

--------------------

A AEC = 2*A FEC = 2*3= 6 cm²

A ADC = 2* A AEC = 2*6= 12 cm²

A ABC =2* A ADC = 2*12 = 24 cm²

A AEB = A ABC - A AEC = 24-6=18 cm²

A ADEF = A ADE + A AEF =A AEC +A FEC = 6+3=9 cm²

succes