Question 181284
{{{x^2+s^2=(2x)^2}}}
:
when 2x=5 x=5/2
:
{{{(5/2)^2+s^2=25}}}
:
{{{s^2=25-25/4}}}
:
{{{s^2=75/4}}}
:
{{{s=sqrt(75/4)}}}
:
{{{s=5sqrt(3)/2}}}cm