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Ob=10cm+10cm+10pierw.z 3+10pierw.z 3=20cm + 20pierw z 3cm
a = 1/2 * 20 = 10
b = 10 * √3 = 10√3
P = ab = 10*10√3 = 100√3
Obw = 2*a + 2*b = 2*10 + 2*10√3 = 20 + 20√3