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Pp= 5cm*2,5cm/2=6,25cm2
Pb=6cm*3cm+6cm*5cm+6cm*4cm=72cm2
Ppc= 6,25cm2*2+72cm2=84,50cm2
graniastosłup drugi czyli b)
Pp= 5cm*2cm=10cm2
Pb= 7cm*5cm*2+7cm*3cm*2=70cm2+42cm2=112cm2
Ppc=20cm2+112cm2=132cm2