The final answer is:
The most appropriate scale for a desk model of the Great Pyramid of Khufu, with a side length of 751 feet, is 1 ft. = 500 ft., as it results in a model side length of approximately 1.5 inches, suitable for display on a desk.
Step-by-step explanation:
The question asks about choosing an appropriate scale for constructing a desk model of the Great Pyramid of Khufu at Giza, which measures 751 feet on each side. To determine the most suitable scale, consider the size of the desk and the final model size that it needs to accommodate.
If a scale of 1 inch equals 10 feet (1 in. = 10 ft.) is used, a side of the pyramid in the model would measure 75.1 inches long, which is over 6 feet long - not practical for a desk display. On the other hand, a scale of 1 foot equals 500 feet (1 ft. = 500 ft.) would reduce the length of a side of the model to approximately 1.5 inches (751 ft / 500 = 1.502 ft), which is a much more manageable size for a desk display. Therefore, a scale of 1 ft. = 500 ft. is more appropriate for making a desk model of the pyramid.