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Ob = 8cm + 32cm
Ob = 40 cm
b = 4cm
c = 4cm
k = √(2² + 4²) = √20 [cm]
k = √((√20)² + 4²) = √(20 + 16) = √36 [cm]
k = 6cm
x2=a2+b2
x2=4x2+2x2
x2=8+4
x2=12
x=√12
a teraz obliczamy k
k2=√12x2+4X2
k2=12+8
k2=20
k=√20
k=2√5