Problems with triangles?

Question

the left one is: find y

it is NOT a right triangle.

the right one is Find x and y:

http://i449.photobucket.com/albums/qq216/hellothere28/math.jpg

thanks (:

Answer 1

(√38)^2 = 2√5)^2 + y^2 ,<====pythagorus' theorum

38= 4*5 +y^2

38-20 = y^2

18  =y^2

√9*√2 = y

3√2 = y

cant do much with the second not inuff info