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DANE
P=9√3 cm².
OBL
Pb.V
P=1/4a²√3
oblicze a
1/4a²√3=9√3
a²=36
a=6
l=a=6 /tworząca
R=a/2=3 /promien podstawy
h=a/2√3=3/2√3 /wysokosc
Pb=πRl=π*3*6=18π cm²
V=1/3πR²h=1/3π*9*3/2√3=4,5π√3 cm³
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