A television screen is advertised as 50 inches. This distance is the diagonal distance across the screen. If the television is 35 inches wide, how tall is it?

Answer 1

sqrt(50^2 - 35^2) =

sqrt( 2500 - 1225) =

sqrt( 1275) =

sqrt(25 * 51) =

5 * sqrt(51) <-- 51 = 3*17 , so nothing is factored out of square root

or APPROXIMATELY 35.707142142714249989996999053836....