Harry made a scale drawing of the elementary school. The schoolyard, which is 154 meters long in real life, is 22 millimeters long in the drawing. What scale did Harry use?
1 millimeter : meters
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To find the scale, we need to find the ratio of the length in the drawing to the length in real life.
In the drawing, the schoolyard is 22 millimeters long. In real life, the schoolyard is 154 meters long.
So, the scale is given by:
1 millimeter : meters
To find the scale, we divide the length in the drawing by the length in real life:
22 millimeters / 154 meters
Simplifying this ratio, we get:
1 millimeter : 7 meters
Therefore, the scale Harry used is 1 millimeter : 7 meters.