\[0,8 = \sqrt{x} \Longrightarrow x = 0,64\]
\[1,6 = \sqrt{x} \Longrightarrow x = 2,56\]
\[2,3 = \sqrt{x} \Longrightarrow x = 5,29\]
\[2,9 = \sqrt{x} \Longrightarrow x = 8,41\]