Question
1 in = 4ft
Julie made a scale drawing of an Comanche helicopter. If the helicopter's rotors are 12 feet long, how long are they in her drawing?
Responses
A 3 inches3 inches
B 4 inches4 inches
C 36 inches36 inches
D 48 inches
Julie made a scale drawing of an Comanche helicopter. If the helicopter's rotors are 12 feet long, how long are they in her drawing?
Responses
A 3 inches3 inches
B 4 inches4 inches
C 36 inches36 inches
D 48 inches
Answers
GPT-4o mini
To determine the length of the helicopter's rotors in Julie's scale drawing, we can use the given scale of 1 inch = 4 feet.
The actual length of the rotors is 12 feet. Using the scale, we need to convert the actual length to the length in inches for the drawing.
1. First, we find how many feet are represented by 1 inch:
\[
1 \text{ inch} = 4 \text{ feet}
\]
2. Then, we find out how many inches correspond to 12 feet:
\[
\text{Length in inches} = \frac{\text{Actual length in feet}}{\text{Scale factor in feet per inch}} = \frac{12 \text{ feet}}{4 \text{ feet/inch}} = 3 \text{ inches}
\]
Therefore, the length of the rotors in Julie's drawing is **3 inches**.
The correct response is:
**A) 3 inches**.
The actual length of the rotors is 12 feet. Using the scale, we need to convert the actual length to the length in inches for the drawing.
1. First, we find how many feet are represented by 1 inch:
\[
1 \text{ inch} = 4 \text{ feet}
\]
2. Then, we find out how many inches correspond to 12 feet:
\[
\text{Length in inches} = \frac{\text{Actual length in feet}}{\text{Scale factor in feet per inch}} = \frac{12 \text{ feet}}{4 \text{ feet/inch}} = 3 \text{ inches}
\]
Therefore, the length of the rotors in Julie's drawing is **3 inches**.
The correct response is:
**A) 3 inches**.