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Pp=4*2=8 cm² lub 4*6=24cm² lub 2*6=12cm²
b)
Pb= 2*4*6+2*2*6=48+24=72 cm² lub
Pb=2*4*2+2*6*2=16+24=40 cm² lub
Pb= 2*2*4+2*4*6=16+48=64 cm²
c)
Pc=2Pp+Pb=88 cm²
d)
V=4*2*6=48cm³
a=4cm
b=2cm
c=6cm
a) Pp=a*b=4cm*2cm=8cm²
b) Pb= 2*ac+2*bc=2*4cm*6cm+2*2cm*6cm =48cm²+24cm²=72cm²
c)Pc=2Pp+Pb=2*8cm²+72cm²=16cm²+72cm²=88cm²
d)V=a*b*c=4cm*2cm*6cm=48cm³