PLS HELP ASAP FIRST CORRECT ANSWER GETS BRAINLIEST​

PLS HELP ASAP FIRST CORRECT ANSWER GETS BRAINLIEST class=

Answer :

Using Pythagorean, a^2 + b^2 = c^2
16 +x^2 = 36.69
Then subtract the 16 from 36.69, which is 23.69
And finally take the square root of that, giving you 4.87