Answer:
[tex]\sqrt {77} \approx 8,77496438739[/tex]
Step-by-step explanation:
With a known theorem, the square of the height relative of the hypotenuse is equal to the product of the projection of the sides on the hypotenuse itself.
In our case, [tex]x^2 = 7\times 11 \rightarrow x = \sqrt{77} \approx 8,77496438739[/tex]
