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Pc=2Pp+Pb
Pp=4cm*6cm=24cm²
2*24=48
Pb=8cm*4cm=32cm²
Pc=2*24+32=48+32=80cm³
V=4cm*6cm*8cm=192cm³
zad.2
Pc=Pp+3Pb
Pp=a²√3÷4=6²√3÷4=9√3
Pb=9√3
Pc=9√3+3*9√3=9√3+27√3=36√3
zad.3
Pp=7²*₃\¹=₃\⁴⁹
H=10
V=₃\⁴⁹ * 10=163₃\¹