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TinaMarya25
a fost răspuns

Calculati aria unui patrat ce are perimetrul egal cu :
20cm
12 mm
3,4dm
5,24m
14,4dam
1km
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Răspuns :

Senseialex
A=L^2
P=4xL

L=20:4=5
A=5^2=25 cm

L=12:4=3 mm
A=9 mm

3,4dm=34 cm
L=34:4=8.5
A=702,5 cm

5,24 m= 524cm
L= 524:4=132 cm
A=1584 cm

14,4 dam=144 m
L=144:4=36 m
A= 1296 m

1 km=1000 m
L=1000:4=250 m
A=6250 m

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