Odpowiedzi

2010-03-26T18:21:38+01:00
Sin60⁰=h/a
√3/2=h/3
h=3√3/2

V=Pp*H

Pp=(3*3√3/2)/2
Pp=9√3/2*½
Pp=9√3/4

V=9√3/4*7
V=63√3/4
2 3 2