Question 339847
Start with the area of a triangle:
{{{A = (1/2)b*h}}} Substitute {{{A = 625}}} and {{{b = h/2}}}
{{{625 = (1/2)(h/2)(h)}}} Simplify.
{{{625 = h^2/4}}} Multiply both sides by 4.
{{{2500 = h^2}}} Take the square root of both sides.
{{{50 = h}}}
The length of the altitude is 50 inches.