SOLUTION: A vacant lot is being converted into a community garden. The garden and the walkway around its perimeter have an area of 460 ft2. Find the width of the walkway if the garden is 12

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Question 1071398: A vacant lot is being converted into a community garden. The garden and the walkway around its perimeter have an area of 460 ft2. Find the width of the walkway if the garden is 12 ft wide by 15 ft long.
Answer by ikleyn(52776) About Me  (Show Source):
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A vacant highlight%28rectangular%29 lot is being converted into a community garden. The garden and the walkway
around its perimeter have an area of 460 ft2. Find the width of the walkway if the garden is 12 ft wide by 15 ft long.
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Assuming that walkway is of uniform width, 

(12+2x)*(15+2x) = 460.

Solve for x.

Answer. x = 4 ft.


For many other similar solved problems, see the lesson
    - Problems on the area and the dimensions of a rectangle
    - Problems on the area and the dimensions of a rectangle surrounded by a strip
    - Problems on a circular pool and a walkway around it
in this site.

Also,  you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic
"Dimensions and the area of rectangles and circles and their elements".