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d=a√2
d=4√2
b)
d²=a²+b²
d²=5²+10²
d²=125
d=√125
d≈11,2
c)
a²=(½d₁)²+(½d₂)²
a²=(½10)²+(½6)²
a²=25+9
a²=36
a=√36
a=6