Odpowiedzi

2010-04-11T21:40:03+02:00
Walec:
Pb=168 cm²
h=14cm

Pb=2*pi*r*h
168=6,28*r*14
168=87,92*r
r=1,91 [cm]

V=pi*r²*h
V=3,14*1,91²*14
V=160,37 [cm³]