The base and the perpendicular height are at right angles to each other. The measurements used must be in the same units. For example, to work in cm a 45 mm measurement would have to be converted to ...

You get to the gate faster by tying your laces on the travelator or by running on the carpet. Imagine twins T1 and T2 walking side by side on a carpet leading to the travelator. T1 stops to tie their ...