Question

Look at triangle ABC. What is the length of side AB of the triangle? Image down below :)

Answer 1

`√(18)`

Explanation:

you need to use Pythagoras theorem

`a^(2)`+
`b^(2)`=
`c^(2)`

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

`3^(2)` is 9

you add the square of both sides together to get 18 this is
`c^(2)`

you need to square root that to get the answer

`√(18)`

Answer 2

The answer is the third option.