Z drutu o dlugosci 84cm kwadratowe zbudowano szkielet szescianu . Oblicz pole i objetosc
Szescian ma 12 krawedzi
a=84:12=7 cm
P=6a²
P=6*49=294 cm²
V=a³
V=7³cm³=343 cm³
L = 84 cm
a = L : 12 = 84 cm : 12 = 7 cm
Pole
P = 6 *a^2 = 6* ( 7 cm)^2 = 6*49 cm^2 = 294 cm^2
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Objętość
V = a^3 = ( 7 cm)^3 = 49*7 cm^3 = 343 cm^3
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Szescian ma 12 krawedzi
a=84:12=7 cm
P=6a²
P=6*49=294 cm²
V=a³
V=7³cm³=343 cm³
L = 84 cm
a = L : 12 = 84 cm : 12 = 7 cm
Pole
P = 6 *a^2 = 6* ( 7 cm)^2 = 6*49 cm^2 = 294 cm^2
=============================================
Objętość
V = a^3 = ( 7 cm)^3 = 49*7 cm^3 = 343 cm^3
========================================