0,3 ha + 1.350 m^2 - 15 dam ^2=.....0

0,3 ha = 3000 m

15 dam = 15 × 100 = 1500 m

3000 m + 1350 m - 1500 m = 2850 meter

semoga jawabannya betul dan maaf kalo salah ^_^

=0.3 ha + 1.350 m^2 - 15 dam ^2
=3.000m2+1.350m2-1.500m2
=2.850 m2


semoga membantu