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V=a³
a=∛V
a=∛216cm³
a=6cm
Pc=6a²
Pc=6*6cm*6cm
Pc=216cm²
2.
H=6cm
a=6cm
Pp=(a²√3)/4
Pp=(36/4) √3
Pp=9√3 cm²
V=Pp*H
V=9√3 cm² * 6cm
V=54√3 cm³
Pb=(6cm)²
Pb=36cm²
Pc=3Pb+2Pp
Pc=(108+9√3) cm²
Pc=9(12+√3) cm²
1.
a√2=6√2
a=6
H=6√6
V=a²H
V=216√6
Pc=2a²+4aH
Pc=72+4*6*6√6
Pc=72+144√6
Pc=72(1+2√6)