![c^2=a^2+b^2\\c=\sqrt[]{a^2+b^2}\\c=\sqrt[]{(6.8)^2+(4.2)^2}\\ c=\sqrt[]{46.24+17.64}\\c=\sqrt[]{63.88}\\ c=7.99\\c=8](/tpl/images/0634/3934/4b89f.png)
What is the value of x?
1
4.2
8.4
4.2√2
...
Answers: 1
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