Question

tanner made a scale drawing of an apartment. he used the scale 1 millimeter : 2 meters. in the drawing, the dining room is 3 millimeters long. what is the length of the actual dining room? meters

Explanation:

Step1: Recall scale - meaning

The scale 1 millimeter : 2 meters means 1 millimeter on the drawing represents 2 meters in real - life.

Step2: Set up proportion

Let $x$ be the actual length of the dining room. We have the proportion $\frac{1\text{ mm}}{2\text{ m}}=\frac{3\text{ mm}}{x}$.

Step3: Cross - multiply and solve

Cross - multiplying gives us $1\times x = 2\times3$. So $x = 6$ meters.

Answer:

6 meters