I can’t find the [Length] [Width] [Height] keys … where did they go?
It is likely that you have unintentionally switched between linear dimension and trigonometric keys. To switch back, either:
•Horizontally swipe your finger across the [SIN] [COS] [TAN] keys •Goto your device’s settings, scroll to the bottom and select BuildCalc. The third setting should be “Trig Keys”. Switch it OFF.