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P=2Pp+Pb
Pp-pole podstawy
Pb-pole boczne
Pp=2cm*2cm
Pp=4cm²
Pb=4*2cm*5cm
Pb=4*10cm²
Pb=40cm²
P=2*4cm²+40cm²
P=8cm²+40cm²
P=48cm²-pole
V=2cm*2cm*5cm
V=20cm³-objętość
5.
P=2Pp+4Pś=8+40=48cm2
V=Pp*H= 4*5=20cm3
5
3x+2/6-15/6=4-2x/+2x
5x-13/6=4
5x=6i 1/6
x=37/30