Question 956875
The Pythagorean Theorem states that {{{a^2+b^2=c^2}}}, so plug in the variables that you already know.
{{{7^2+b^2=25^2}}}
Now solve for b.
{{{49+b^2=625}}}
{{{b^2=576}}}
{{{sqrt(576)}}} is 24. So the missing side has the length of 24 units.