a = 12cm
a/3=4cm
P=12cm*4cm=48cm^2
a= 12cm
b= 12cm/3=4cm
pole= a*b=12cm*4cm=48cm²
odp. D
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a = 12cm
a/3=4cm
P=12cm*4cm=48cm^2
a= 12cm
b= 12cm/3=4cm
pole= a*b=12cm*4cm=48cm²
odp. D