The cover of mathematics textbook is 23.8 cm long and 16.9 cm wide

The cover of mathematics textbook is 23.8 cm long and 16.9 cm wide

1 decimeter = 10 cm 1 cm = 0.1 decimeter 23.8 cm = 2.38 decimeter 16.9 cm = 1.69 decimeter s = length × width = 2.38 × 1.69 = 4.0222 decimeter = 40.222 cm

The cover of a math book is 24 cm long, 7.2 cm wider than its width. What's the width of the cover of a math book?

24-7.2 = 16.8 (CM). A: the width of the cover of the math book is 16.8 cm

Who knows the definition of length, width and height in mathematics? It's better to have a theorem or definition

Height is the height of the cube, the vertical edge
The length is horizontal and is generally perpendicular to our line of sight and parallel to our eyes
Width is also horizontal. It's another horizontal side