SOLUTION: Please explain how to solve: a rectangular pool 20 feet wide and 60ft long is surrounded by a walkway of uniform width. If the total area of the walkway is 516 sq ft, how wide is t
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Question 570930: Please explain how to solve: a rectangular pool 20 feet wide and 60ft long is surrounded by a walkway of uniform width. If the total area of the walkway is 516 sq ft, how wide is the walkway?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Please explain how to solve: a rectangular pool 20 feet wide and 60ft long is surrounded by a walkway of uniform width. If the total area of the walkway is 516 sq ft, how wide is the walkway?
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w = the width of the walkway
The outside dimensions are 20 + 2w by 60 + 2w
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The area inside the walkway is (20 + 2w)*(60 + 2w)
The area of the pool is 20*60 = 1200 sq ft
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516 = (20 + 2w)*(60 + 2w) - 1200
Solve for w
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