How do you derive the total space if each floor measures 100 feet by 50 feet and there are 4 floors?

To determine the total space of a building with multiple floors, you need to calculate the area of one floor and then multiply it by the number of floors.

In this case, the dimensions of each floor are given as 100 feet by 50 feet. To find the area of a single floor, you multiply these two measurements:

Area of one floor = Length x Width = 100 feet x 50 feet = 5,000 square feet.

Since there are 4 floors in the building, you then multiply the area of one floor by the number of floors:

Total space = Area of one floor x Number of floors = 5,000 square feet x 4 = 20,000 square feet.

This calculation leads to the conclusion that the total space of the building is 20,000 square feet, making that the correct answer.

Thus, recognizing the fundamental principle of area calculation for multiple floors is key in real estate assessments.