why does this not work?

public static tvDimensions tvSize(double diagonal, double aspect) \{ tvDimensions result = new tvDimensions () ; double height; double width; height = Math.sqrt (Math.pow ( diagonal, 2)/(1+ Math.pow ( aspect, 2))) ; result.width = aspect *height; result. height = height; return result; 3] class tvDimensions\{ public double height; public double width; 3 \} public static twDimensions tvsize(double diagonal, double aspect) f No endosing instance of type thws is accessible. Must qualify the allocation with an enclosing instance of type hw 5 le g x new A0 where x is an instance of thas?] double height; double width; height=Nath.sqrt(Math.pow(diagonal,2)/(1+Math,pow(aspect,2)))); result,width"aspect"height;result,height=height; return result; class tvDimensionsf public double height; public double width