Odpowiedź:
a) 10cm²
b) 18cm²
c) ab/2
d) 2m/2
P1 = [tex]\frac{4*5}{2}[/tex] = [tex]\frac{20}{2}[/tex] = 10cm²P2 = [tex]\frac{6*6}{2}[/tex] = [tex]\frac{36}{2}[/tex] = 18cm²P3 = [tex]\frac{a*b}{2}[/tex] cm²P4 = [tex]\frac{m*m}{2}[/tex] cm²
