Final answer:
The perimeter of the rectangular pool with a width of 10 feet and a length of 40 feet is 100 feet.
Step-by-step explanation:
The perimeter of a rectangular pool can be found by adding up the lengths of all four sides. In this case, the width of the pool is 10 feet and the length is 40 feet. Since opposite sides of a rectangle are equal in length, we can simply add the lengths of the two width sides (10 + 10) and the lengths of the two length sides (40 + 40) to find the perimeter. Therefore, the perimeter of the pool is 100 feet.
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