Answer:
Scholars knew that the Egyptians believed in afterlife, because, first, after the discovery of the Rosetta stone, they were able to read many ancient scripts that mentioned procedures to ensure that one goes to the afterlife.
Explanation:
I don't have an answer for you, but I do have an important hint ... one that will
stand you in good stead as you go further in your mathematical studies:
The reason there's a drawing right next to this question in the book or on the
homework sheet is that the question can't be answered without the drawing.