Question

Need help on this !!

Answer 1

`√(360)`

Explanation:

Use Pythagorean Theorem:

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

Plug in a=18 and b=6

`18^2+6^2=c^2`

Simplify

`360=c^2`

Thus when you square root both sides, you will get:

`c=√(360)` which is also equivalent to 18.97 or
`6√(10)`