A rectangular swimming pool is surrounded by a concrete sidewalk that is 3 feet wide. The dimensions of the rectangle created by the sidewalk are 21 feet by 31 feet. what is the area


  1. Answer:
    Step-by-step explanation:
    to find the area of the pool, subtract 6 from both the length and width of the pool plus the sidewalk. The reason to subtract 6 is 3 feet is added to each side of the pool.
    Therefore, the length of the pool is 31 – 6, or 25 feet.
    The width of the pool is 21 – 6, or 15 feet.
    The area of the pool is 15 * 25 or 375 square feet.


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