Question 692551
given:
{{{ A = (1/2)*b*h }}}
Now for the base, {{{b}}}, use one of the equal legs, {{{s}}}
{{{ A = (1/2)*s*s }}}
{{{ A = (1/2)*s^2 }}}
{{{ 5 = (1/2)*s^2 }}}
{{{ s^2 = 10 }}}
{{{ s = sqrt(10) }}}