The length of a side of the great pyramid of khufu at giza, egypt, is 751 feet. if you were to make a model of the pyramid to display on your desk, which would be an appropriate scale: 1 in. = 5 ft, 1 in. = 10 ft, 1 ft = 500 ft, or 1 ft = 5,000 ft?

Depends on the size of your desk generally, 2 sheets of paper can easily lay next to each other on a desk and papers are about 8 inches so about 16-20 inches wide of a desk and about 15 inches long
751/5= 150.2 inches too big for desk
751/10=75.1 inches too big for desk
751/500=1.502 feet or 18 inches a bit big for the desk but should be okay
751/5000=.1502 feet or 1.8 inches fits on desk but a bit small
I would go with either 1=5000 or 1=500 because those are the only 2 that would fit on your desk, probably the 1=5000 would be the best answer