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P=a*h/2 = 7*5/2 = 35/2 =17,5 cm²
b=0,5dm=5cm
P=a*b/2
P=7*5/2=17,5cm²
Odp.:Pole wynosi 17,5cm²
p=a razy h
2
P=5 razy 7=17,5
2