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Pp-pole podstawy
Pp=3cm*6cm
Pp=18cm²
Pb-pole boczne
Pb=2*3cm*5cm+2*6cm*5cm
Pb=30cm²+60cm²
Pb=90cm²
Pc=2*18cm²+90cm²
Pc=36cm²+90cm²
Pc=126cm²