Question

under root 20 + under root 20+ under root 20

Answer 1

$= > \sqrt{20} + \sqrt{20} + \sqrt{20} .$
Value of √20 is 4.472135955.
So,
$= > 4.472135955 + 4.472135955 + 4.472135955.$
=>13.416407865.
Hope it'll be helpful.