Question 1128455
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Your post is uncompleted, since it does not provide input info about the dimensions of the pool.


Then you add this info L = 25 m, W = 10 m.


With this data the solution is as follows:


<pre>
    (25+2w)*(19+2w) - 25*10 = 74.        <<<---=== the area of the border is the difference of areas of two rectangles 


    25*19 + 50w + 38w + 4w^2 - 25*10 = 74


    4w^2 + 88w - 74 = 0


    2w^2 + 44w - 37 = 0
</pre>

From this point, can you complete the solution on your own ?


You can use the quadratic formula to solve the last equation.



&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Good luck and happy solving !



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To see many other similar solved problems, &nbsp;look into the lessons

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/Surface-area/Problems-on-the-area-of-a-rectangle-surrounded-by-a-strip.lesson>Problems on the area and the dimensions of a rectangle surrounded by a strip</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/Surface-area/Cynthia-Besch-and-the-rug.lesson>Cynthia Besch wants to buy a rug for a room</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/Surface-area/Circular-pool-and-a-walkway-around.lesson>Problems on a circular pool and a walkway around it</A>

in this site.


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Thanks for posting your solution.


I edited a bit your last post.


I am very glad that you made a step forward after my response and were able to complete the solution.


Your answer is correct, and your post clearly shows that you understand the solution in all details.



Again, I am very glad.


My congratulations !