Question

tara made a scale drawing of a boarding school. she used the scale 1 centimeter : 7 meters. a building at the school is 12 centimeters long in the drawing. how long is the actual building? meters

Explanation:

Step1: Identify the scale - factor relationship

The scale is 1 centimeter : 7 meters, meaning 1 cm on the drawing represents 7 meters in real - life.

Step2: Set up a proportion to find the actual length

Let $x$ be the actual length of the building. We have the proportion $\frac{1}{7}=\frac{12}{x}$. Cross - multiplying gives $x = 12\times7$.

Step3: Calculate the actual length

$x=84$ meters.

Answer:

84