Răspuns:
Explicație pas cu pas:
BE=2AE⇒ AB=AE+2AE=3AE
AE=AB/3 =18/3 =6 cm
BF=GF=GC=18/3 =6 cm
Aabcd=AB*BC=18/12=216 cm²
Aadf=AD*DF=/2 =12*6/2=36cm²
Aagb =AB*BC/2=18*12/2=108cm² (BC = h pt .toate Δ )
Aacb =AE*BC/2=6*12/2 =36 cm²
c) A ADFE=AE*AD=6*12 =72 cm²
