24dam^2+36,25hm^2+275m^2=2400m²+362500m²+275m²=365175m² 92,30m^2+276325cm^2+48dm^2 =92,3m²+27,6325m²+0,48m²=120,4125m² 326,25dam^2-0,72hm^2=32625m²-7200m²=25425m² 2,75m^2-32,25dm^2=2,75m² -0,3225m²=2,4275m² b)in cm^2: 7,25m^2-4,52dm^2+72,5cm^2=72500cm²-452cm²+72,5cm²=72120,5cm²