Select the correct answer.
Tia made a scale drawing of the White House for her history project. The actual length of the building is 168 feet, and its width (with porticoes) is 152 feet. If the scaled length of the building in the drawing is 21 inches and the width is 19 inches, what scale did Tia use to make the drawing?
 A. 
1 inch to 6 feet
 B. 
1 inch to 7 feet
 C. 
1 inch to 8 feet
 D. 
1 inch to 9 feet
 E. 
1 inch to 10 feet

To determine the correct scale Tia used for her drawing, we need to compare the actual dimensions of the White House with the scaled dimensions given in her drawing.

The actual length of the White House is 168 feet, and its scaled length is 21 inches. The width of the White House is 152 feet, and its scaled width is 19 inches.

First, let's find the scale factor for the length:
\[
\text{Scale factor for length} = \frac{\text{Actual length}}{\text{Scaled length}} = \frac{168 \text{ feet}}{21 \text{ inches}}
\]
\[
\frac{168}{21} = 8 \text{ feet per inch}
\]

Next, let's find the scale factor for the width:
\[
\text{Scale factor for width} = \frac{\text{Actual width}}{\text{Scaled width}} = \frac{152 \text{ feet}}{19 \text{ inches}}
\]
\[
\frac{152}{19} = 8 \text{ feet per inch}
\]

Since both the length and width scale factors are 8 feet per inch, the correct scale is:
\[
\text{1 inch to 8 feet}
\]

Thus, the correct answer is:
 C. 1 inch to 8 feet

Would you like more details or have any questions? Here are 5 questions you might consider asking next:

1. How do you convert scales from one unit to another?
2. What are some common scales used in architectural drawings?
3. How can you verify the accuracy of a scale drawing?
4. What tools are typically used for making scale drawings?
5. Can you explain the difference between a scale factor and a scale ratio?

Tip: Always double-check your calculations when working with scales to ensure accuracy.

Learn how to calculate the scale used by Tia in her White House drawing project. Understand the concept of scale factor and its application in converting actual dimensions to scaled dimensions. Suitable for Grades 7-9.

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