Question

What is the value of y?

A) 3 (square root of 3)
B) 6 (square root of 3)
C) 9 (square root of 3)
D) 12 (square root of 3)

Answer 1

Find TU with Pythagorean theorem:
TU=√6²-3²=√36-9=√27=3√3
Now you can find y:
y=√TU²+9²=√27+81=√108=6√3