Odpowiedź:
z,1
a√2 = 4√2 ⇒ a = 4
V = a³ = 4³ = 64
Pc = 6 a² = 6*4² =6*16 = 96
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z.2
a = 6 cm, b = 0,4 dm = 4 cm , c = 0,1 m = 10 cm
więc
p² = 6² + 4² + 10² = 36 + 16 + 100 = 152 = 4*38
p = [tex]\sqrt{4*38} = 2\sqrt{38}[/tex]
p = 2 [tex]\sqrt{38}[/tex] cm
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z.3
a = 3 cm
h = 3 a = 3*3 cm = 9 cm
V = Pp* h = [tex]\frac{a^2 \sqrt{3} }{4}[/tex] * h = [tex]\frac{9*\sqrt{3} }{4} *9 = \frac{81}{4} *\sqrt{3}[/tex]
V = [tex]\frac{81 \sqrt{3} }{4}[/tex] cm³
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Szczegółowe wyjaśnienie: