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R=2/3 h
h=3R/2
h=3*6√3/2
h=9√3cm
h=a√3/2
a=2h/√3
a=2*9√3/√3
a=18 cm
Pp=a²√3/4
Pp=18²√3/4
Pp=324√3/4
Pp=81√3 cm²
V=Pp*H/3
H=3V/Pp
H=3*1080√3/(81√3)
H=40cm wysokośc