Answer:
[tex]\sqrt{18}[/tex]
Step-by-step explanation:
you need to use Pythagoras theorem
[tex]a^{2}[/tex]+[tex]b^{2}[/tex]=[tex]c^{2}[/tex]
c is the hypotenuse. the longest side (ab)
a and b are the other two side lengths squared (bc,ca)
the length of both a and b are 3 squares long
[tex]3^{2}[/tex] is 9
you add the square of both sides together to get 18 this is [tex]c^{2}[/tex]
you need to square root that to get the answer
[tex]\sqrt{18}[/tex]
