Odpowiedzi

2010-04-08T19:17:11+02:00
Pp = π * 3² = 9πcm²
Pb = π * 3 * 4 = 12πcm²
Pc = 9π + 12π = 21πcm²
V = 1/3 * π * 3² * 5 =3 * 5π = 15πcm²