Oblicz krawędź czworościanu jeśli jego obiętość wynosi cm. H= 3cm
V=1/3*Pp*H
H=3cm
V=16psqrt3/3cm
16sqrt3/3=1/3*Pp*3
16sqrt3=Pp
Pp=1/2*a*h
a-krawędź
h-wysokość podstawy
h=asqrt3/2
Pp=1/2*a*asqrt3/2
Pp=a^2sqrt3/4
16sqrt3/3=a^2sqrt3/4
3a^2=4*16
a=8sqrt3/3 cm=~~4,62cm
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V=1/3*Pp*H
H=3cm
V=16psqrt3/3cm
16sqrt3/3=1/3*Pp*3
16sqrt3=Pp
Pp=1/2*a*h
a-krawędź
h-wysokość podstawy
h=asqrt3/2
Pp=1/2*a*asqrt3/2
Pp=a^2sqrt3/4
16sqrt3/3=a^2sqrt3/4
3a^2=4*16
a=8sqrt3/3 cm=~~4,62cm