Final answer:
The relationship between the length (L), width (W), and height (H) of a rectangular mug with a square base that holds 360ml of milk when completely full can be represented by the expression L x W x H = 360.
Step-by-step explanation:
The relationship between the length (L), width (W), and height (H) of a rectangular mug with a square base that holds 360ml of milk when completely full can be represented by the expression L x W x H = 360. This is because the volume of the mug is equal to the product of its length, width, and height.