INALTIMIMEA= media aritmetica a bazelor =/48+12/:2=60:2=3o ,aria =linia mijlocie orih=30ori30=900
CM PERPENDICULAR PE AB
MB=AB-AM=48-12=30 ,in triungiul BMC aplicam TP ,BC patrat=MB patrat+CMpatrat=900-576=324,BC=18.,dist /A,BC/ =aria triunghiului ABC,
A=AB.CM/2=48.30/2=720 , A=BC.d /2=18.d/2=9.d,,9.d=720, d =80