Осевое сечение конуса – прямоугольный треугольник с гипотенузой 4корня из 2
см. S полной поверхности- ?.
S=пr(l+r)
r==
h=r=
l==
S=п*(4+=
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S=пr(l+r)
r=
=
h=r=
l=
=
S=п
*(4+
=