Question

What is the value of y?

Answer 1

Find UT

`\\ \rm\Rrightarrow UT^2=9(3)`

`\\ \rm\Rrightarrow UT^2=27`

`\\ \rm\Rrightarrow UT=3√(3)`

Now

`\\ \rm\Rrightarrow y^2=9^2+27`

`\\ \rm\Rrightarrow y^2=81+27`

`\\ \rm\Rrightarrow y^2=108`

`\\ \rm\Rrightarrow y=6√(3)`