Question 48120
Say the other two sides are x ft and y ft.
{{{1/2xy=84}}}so{{{y=168/x}}}
{{{x^2+y^2=25^2}}}
{{{x^2+(168/x)^2=625}}}
{{{x^4-625x^2+28224=0}}}
{{{x^2=576or49}}}
x=24,7
when x=24, y=168/x=7
when x=7, y=168/x=24
so the lengths of its other two sides are 7 and 24