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2010-03-10T14:11:16+01:00
R=14cm
Pp=πr²
Pp=π14²=196π cm²
V=Pp*H
H=40cm
V=196π*40=7840π cm³=7,84π dm³=ok. 25 dm³=25l
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2010-03-10T14:20:40+01:00
D=28
r=14
h=40
π=3,14
V=Pp*h
Pp=πr²=3,14*14²=615,44
V=615,44*40=24617,6cm³=ok25dm³=25l
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