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zw lasnosci kata ostrego 30stopni wynika zaleznosc :
2h=d
2h=8 /;2
h=4cm --->wysokosc walca
h√3=4√3=2r
to r=4√3/2=2√3 cm --->promien walca
V=πr²·h=(2√3)²·π·4=12·4π=48π cm³
Pc=2πr²+2πrh=2π·(2√3)²+2·2√3·4π=2π·12+16√3π=24π+16√3π=8π(3+2√3)cm²