You can find the height of the screen by using the Pythagorean theorm; c2=a2+b2 where c= 32, a= 28 and b= the height (h). Then we get 322= 282+h2 = 1024= 784 + h2 subtract 784 from both sides
240= h2 then take the square root from both sides and then you have your answer; h= 15.4919333848296675