Odpowiedzi

2010-01-17T19:45:01+01:00
3mm=0,3cm
P=a*h
P=0,3*3=0,9

10m=0,010
P=2km*0,010= 0,020


100c=1m

P=1*100=100

50CM=5dm
P=5*0.5= 2.5
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2010-01-17T19:50:04+01:00
3cm x 3mm
3cm = 30mm
3mm = 0,3cm
P = 30mm * 3mm = 90 mm^2
P = 3cm * 0,3cm = 0,9 cm^2


2km x 10m
2km = 2000m
10m = 0,01km
P = 2km * 0,01km = 0,02 km^2
P = 2000m * 10m = 20 000 m^2


100m x 100cm
100m = 10 000cm
100cm = 1m
P = 100m * 1m = 100 m^2
P = 10 000cm * 100 cm = 1 000 000 cm^2


0,5 dm x 50 cm
0,5dm = 5cm
50cm = 5dm
P = 0,5dm * 5dm = 2,5 dm^2
P = 5cm * 50cm = 250 cm^2
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