Question

say that a and b are the lengths of the legs of a right triangle and c is the length of the hypotenuse. find c if a=15 and b=20.

Answer 1

c= 25 because it is a 3 4 5 triangle

Answer 2

\[c^{2}=a ^{2}+b ^{2}\rightarrow c ^{2}=15^{2}+20^{2}\rightarrow c ^{2}=625\rightarrow c=+\sqrt{625}=25\]