За теоремой Пифагора.
с2=a2+b2; c2= 1 + 16*5 = 1 + 80 = 81;
c=9
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За теоремой Пифагора.
с2=a2+b2; c2= 1 + 16*5 = 1 + 80 = 81;
c=9