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H²=256-64=192
H≈13,9
V=2πrH
V=π×16×13,9≈698,3
Pc=Pb+2Pp
Pb=2πrH
Pb=2π×4×13,9=2π×55,6≈349,2
Pp=πr²
Pp=16π=50,24
Pc=349,2+2×50,24≈449,68