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H=5
r=4
Pb=pi * r*l
Pb=pi*4*5=20pi
Pbwalca=2pirl
Pbw=2pi*4*5
Pbw=40pi
c)V=πr²*H
r=8
H=13
V=π8²*13
V=64π*13
V=832π
Pc=2*πrl+2πrH
r=8
H=13
l=10
Pc=2*π*8*10+2π*8*13
Pc=160π+208π
pc=368π