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Pp=6*(5cm)²√3/4=3*25cm²√3/2=37,5√3cm²
Pc=2*Pp+Ppb=2*37,5√3cm²+540cm²=75√3cm²+540cm²=15cm²(36+5√3)
V=37,5√3cm²*18cm=675√3cm³
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