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pozdrawiam serdecznie))
a=2cm
Pc=36 cm²
h=?
Pp=3a²√3/2=3·2²√3/2=12√3/2=6√3cm²
Pb=6ah=6·2·h=12h
Pc=2Pp+Pb
podstawiamy :
36=2·6√3+12h
36=12√3+12h /:12
3=√3+h
3-√3=h
h=(3-√3)cm --->dl. wysokosci graniastoslupa