Pole prostokąta: P = a · b
Pole kwadratu: P = a²
[tex]a) \ P = (3 \ cm)^{2} = 9 \ cm^{2}\\\\b) \ P = 4 \ cm\cdot1 \ cm = 4 \ cm^{2}\\\\c) \ P = 4,5 \ cm\cdot2 \ cm = 9 \ cm^{2}\\\\d) \ P = (1 \ mm)^{2} = 1 \ mm^{2}\\\\e) \ P = 3 \ cm\cdot1,5 \ cm = 30 \ mm\cdot15 \ mm = 450 \ mm^{2}\\\\f) \ P = 2 \ cm\cdot1 \ cm = 20 \ mm \cdot 10 \ mm = 200 \ mm^{2}[/tex]
