The length of the rectangular pool is 15 m. Find the perimeter of the pool if its area is 120 m2.

The perimeter of any rectangle is

P = 2 * (a + b), where a is the length of the rectangle and b is its width.

We know the length, but we need to find out the width. The formula for the area of a rectangle looks like this:

S = ab.

We know the area. Let us express the width from this formula:

b = S / a.

Find the pool width:

b = 120/15 = 8 m.

Now, knowing the width, you can find the perimeter of the pool. Let’s calculate it:

P = 2 * (15 + 8) = 2 * 23 = 46 m.

Answer: the perimeter of the pool is 46 meters.