Odpowiedź:
4) figura pierwsza od lewej
2+3+1=6 Pole prostokąta= 6*7=42
Pole a= 3*5=15
Pole figury=42-15=27
figura po prawej
1+5+1=7 Pole prostokąta= 7*6=42
Pole a= 5*2=10
Pole b= 1*2=2
Pole figury= 42-10-2=30
5) a) 1m^2= 1m*1m=100cm*100cm=10000cm^2
b) 1cm^2=1cm*1cm=10mm*10mm=100mm^2
c)1m^2=1m*1m=100cm*100cm=1000mm*1000mm=1000000mm^2
6) 1m^2=10000cm^2
1cm^2=0.0001m^2
1cm^2= 100mm^2
1mm^2= 0.01cm^2
1km^2= 1000000m^2
1m^2= 0.000001km^2
