the length of a car measures 20 feet. what is the length of a model car if the scale factor is 1:64 inches?
a. 1.67 inch
b. 3.21 inch
c. 3.75 inch
d. 4.25
To find the length of the model car, we first need to convert the given scale factor to inches.
The scale factor is 1:64 inches, which means that 1 unit on the model car represents 64 inches in real life.
Since the length of the car is 20 feet, we need to convert it to inches by multiplying by 12. Therefore, the length of the car in inches is 20 ft * 12 in/ft = 240 inches.
To find the length of the model car, we divide the length of the car (240 inches) by the scale factor of 64 inches.
Length of the model car = 240 inches / 64 inches = 3.75 inches
So, the length of the model car is 3.75 inches.
The correct answer is c. 3.75 inch.