Question 25679
By using the pythagorean theorem;
{{{a^2}}}+{{{b^2}}}={{{c^2}}}
Where a & b are legs and c is the hypotenuse, is all you do is plug in the given amounts and then solve for the unknown.
ex;
a=9
b=?
c=15
{{{9^2}}}+b={{{15^2}}}
81+b=225
b=225-81
b=144
{{{sqrt(144)}}}=12
So b=12
Hope you understand
=)