Odpowiedzi

2010-03-21T20:43:14+01:00
B) Pp = πr²
Pp = 9π×2
Pp = 18π

Pb = 2πr×H
Pb = 2π3×3
Pb= 18π * 2

P = a²
P = 6²
P= 36

Pc = 18π + 18π + 18π + 36 = 54π +36
61 3 61