The image shows a representation of mountains of various heights, numbered 1, 2, and 3. The plain is labeled number 4. A representation of mountains of various heights, numbered 1, 2, and 3. The plain is labeled number 4.

At which point is air pressure lowest?

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4 A backyard is 40.5 feet long and 25 feet wide. In order to install a pool, the yard needs to be reduced by a scale of One-third. What is the area of the reduced yard?