Based on the context of the provided solution, what are the likely sub-questions or requests related to finding the height of a box at point B?

Let's continue with the remaining parts of the problem.

c) Calculate the value of $x$, the height of the box at point B?

The question asks for "the value of $x$, the height of the box at point B?". This phrasing is ambiguous because $x$ is labeled as a distance along the incline from B to C, not a height. However, it's common for such questions to imply that $x$ is the height, or to ask for both. Given the diagram, we will assume it asks for the height of the box at point B ($h_B$) and the distance $x$ from B to C.

From the diagram and previous parts:

• Mass of the