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H=24cm
w skali1;2
a=9cm
H=12cm
h=a√3:2=9√3:2=4,5√3
⅓h=1,5√3cm
Pp=a√3:4=9²√3:4=20,25√3
v=⅓×20,25√3×12=81√3cm³
h ściany=√12²+(1,5√3)²=√144+6,75=√150,75=1,5√67
Pb=3×½×9×1,5√67=20,25√67
Pc=20,25(√3+√67)cm²