Odpowiedź:
Zad 1
Pole prostokąta liczymy wzorem a*a (bok*bok), więc :
a) 3cm= 30mm
P=30mm*3mm= 90mm²
b) 2km= 2000m
P=2000m*10m=20 000m²
c) 100cm=1m
P=100m*1m=100m²
d) 0,5 dm= 5cm
P=5cm*50cm=250cm²
Zad 2
P=426cm*987cm=420 462cm²
420 462cm²=42,0462m²≈42m²
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Odpowiedź:
Zad 1
Pole prostokąta liczymy wzorem a*a (bok*bok), więc :
a) 3cm= 30mm
P=30mm*3mm= 90mm²
b) 2km= 2000m
P=2000m*10m=20 000m²
c) 100cm=1m
P=100m*1m=100m²
d) 0,5 dm= 5cm
P=5cm*50cm=250cm²
Zad 2
P=426cm*987cm=420 462cm²
420 462cm²=42,0462m²≈42m²