1) Lets say there is point A that is perpendicular to WX and has W in it.
2) To find YA, we have to 19 - 11 = 8
3) Do Pythagorean theorem to find WY, which is:
[tex] \sqrt{ 42^{2} + 8^{2} } = \sqrt{1828} = 2 \sqrt{457} [/tex]
This is equal to 42.76 in decimal