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1.
H=6
2r=6
V= ⅓ Pp×H
Pp=πr²
V=⅓π×9×6
V=18π
2.
r-promien podst.
H- wys. walca
Ppc= 2πr²+ 2πr×H
Ppc= 2πr(r+H)
V= πr²H
Mamy 2 przypadki:
Ip. 2r=4 ∧ H=8
r=2
Ppc = 40π
V= 32π
IIp. 2r=8 ∧ H=4
r=4
Ppc= 64π
V= 64π
stożek
V=⅓πr²*h
r=6:2=3
h=6
V=⅓π*3²*6
V=2π*9
V=18π [cm³]
2) walec
V=πr²h
Pc=2πr²+2πrh
Iprzypadek
r=4:2=2
h=8
V=π*2²*8
V=4*8π
V=32π [cm³]
Pc=2π*2²+2π*2*8
Pc=2π*4+32π
Pc=8π+32π
Pc=30π [cm²]
IIprzypadek
r=8:2=4
h=4
V=π*4²*4
V=16*4π
V=64π [cm³]
Pc=2π*4²+2π*4*4
Pc=2π*16+32π
Pc=32π+32π
Pc=64π [cm²]