To determine the actual length of the building based on the given scale model, follow these steps:
1. Identify the dimensions of the scale model:
- The scale model is 5 inches wide by 7 inches long.
2. Understand the scale factor:
- The scale factor given is 1 inch : 15 feet. This means that each inch on the model represents 15 feet in the real world.
3. Determine the actual length of the building:
- The model length is 7 inches. To find the actual length of the building, we need to multiply the length of the model by the scale factor.
- Calculation: [tex]\( 7 \text{ inches} \times 15 \text{ feet per inch} \)[/tex]
4. Perform the multiplication:
- [tex]\( 7 \times 15 = 105 \)[/tex]
5. Conclusion:
- The actual length of the building is 105 feet.
Therefore, the correct answer is:
C) 105 ft
