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Pc=216π cm²
promien walca =r
wysokosc walca h=2r
Pc=2πr²+2πr·h
216π=2πr²+2π·r·2r /:2π
108=r²+2r²
108=3r² /:3
r²=36
r=√36=6cm
to h=2·6=12cm
V=πr²·h=6²π·12=36·12π=432π cm³