To solve the problem shown above you must keep on mind the following information given in the problem:
1. You have that A reflection pool 27 meters long measured 1.8 centimeters on the drawing. Therefore, you can calculate the scale drawing of the city park as below:
scale=1.8/27
scale=1/15
2. Therefore, as you can see, the answer is:
The scale used to make the drawing is 1:15 (This means that 1 centimeter represents 15 meters).