Odpowiedzi

2010-02-24T17:05:52+01:00
R podstawy - 8cm
h - 16cm

Pc = 2пr² + 2пr * H
Pc = 2π8² + 2π8 * 16
Pc = 128π + 256π
Pc = 384π [cm²]
48 2 48
2010-02-24T17:06:54+01:00
R=8cm
H=8cm*2=16cm

p=2pi r do kwadratu+2pi r*H
p=2pi 8 do kwadratu+ 2 pi 8*16
p=2pi 64+2pi 128
p=128pi+256pi
p=384pi cm kwadratowy
18 3 18