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a=5√2
V=a³
V=(5√2)³
V=125√8 = 125 √4*2 = 125*2√2 = 250√2
zad.2
Pc=?
a=4 cm
H=6 cm
Pb=4*a*H
Pb=4*4*6
Pb=96 cm²
Pp=a²
Pp=4²
Pp=16 cm²
Pc=2Pp+Pb
Pc=2*16+96
Pc=32+96
Pc=128 cm²
zad.3
V=?
Pc=?
a=3√2
Pc=a²√3
Pc=(3√2)²*√3
Pc=9*2*√3
Pc=18√3
a = 5√2
V = (5√2)³ = 250√2
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2. Pc = Pp + Pb
Pp = 2a²
Pb = 4aH
a=4
H=6
Pc = 2 · 4² + 4 · 4 · 6 = 32 + 96 = 128 [cm²]
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3. Zdjęcie.