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P= 4cm*9cm
P= 36cm
a= √36cm
a= 6cm
Spr.
a= 6cm
P= a*a
P= 36cm2
b) P=a*b
P= 6cm*24cm
P= 144cm
a= √144cm
a= 12cm
Spr.
a= 12cm
P= a*a
P= 12cm*12m
P= 144cm2
c) P=a*b
P= 25cm*9cm
P= 225cm2
a= √225
a= 15cm
Spr.
a= 15cm
P= a*a
P= 15cm*15cm
P= 225cm2
Liczę na naj ;)