V=640 pi cm3
h=10cm
640picm3=10cm+pi*r2 /:10
64pi=pi*r2 /:pi
64=r2
r=8
8*2=16
ODP. Średnica walca ma 16 cm.
V=640 pi
V=Pp*H
640 pi=Pp*10
Pp=640pi : 10
Pp= 64pi
Pp=\pi r^{2}
64\pi=\pi r^{2} /:\pi
64=r^{2}
r=pierw z 64
średnica= 16
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V=640 pi cm3
h=10cm
640picm3=10cm+pi*r2 /:10
64pi=pi*r2 /:pi
64=r2
r=8
8*2=16
ODP. Średnica walca ma 16 cm.
V=640 pi
V=Pp*H
640 pi=Pp*10
Pp=640pi : 10
Pp= 64pi
Pp=\pi r^{2}
64\pi=\pi r^{2} /:\pi
64=r^{2}
r=pierw z 64
r=8
średnica= 16