Question

The model of the car below uses a scale of 1 cm = 3.5 ft: What is the actual length of the car in feet?

A. 10.5 ft
B. 3.5 ft
C. 1.17 ft
D. 9.5 ft

Answer 1

To find the actual length of a car based on a model's scale, you multiply the model's length in centimeters by the scale factor to get the length in feet. Without the model's length, we cannot determine the actual length.

Step-by-step explanation:

The student is asking how to determine the actual length of a car given the scale of a model car. To solve this, you can set up a simple proportion based on the scale given. If the scale model uses 1 cm = 3.5 ft, and the length of the model car is not provided in the question, we cannot find the exact length without that measurement. Assuming the scale length of the model car is known, for example, 3 cm, the actual length would be 3 cm multiplied by the scale factor (3.5 ft), resulting in 10.5 ft for the actual length of the car.

To give a practical example:

1. Multiply the model's length in cm by the scale factor.
2. The result is the length of the car in feet.

For instance, if the model car was 2 cm long, the actual car would be 7 ft long (2 cm * 3.5 ft/cm = 7 ft).