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P=8cmx6,1cm=48,8cm²
Liczę na naj!.:***
b=8cm-1,9cm=6,1cm
P=a*b
P=8cm*6,1cm=48,8cm2 ;))
Pole tego prostokata wynosi 48,8cm2 ;))
a=8cm
b=6,1cm
P 8cm*6,1cm=48,8 cm