Odpowiedzi

2010-03-06T15:20:16+01:00
Pb=168cm
h=14cm
V=?
V=πr² *h
Pb=2πr*h
168=2πr*14
2010-03-06T16:11:38+01:00
V=Лr²h

Pb=h*obw
168=14*2Лr
168=28Лr
r=6/Л

V=Лr²h=(6/Л)²Л*14=504/3,14=160,5