Answer
$x=10\sqrt2$ ft
14.1 ft
Work Step by Step
$x^2+x^2=20^2$
$2x^2=400$
$2x^2/2=400/2$
$x^2=200$
$\sqrt{x^2} =\sqrt{200}$
We want only the positive square root since we are talking about distance.
$x=\sqrt {200}$
$x=\sqrt{2∗10∗10}$
$x=10\sqrt2$
