6.The dimensions of Eric’s pool are 9 feet by 7 feet. He wants to build a walkway surrounding the pool so that the square footage of the walkway and pool is 143 square feet. How wide is one side of the walkway?

Question

6.The dimensions of Eric’s pool are 9 feet by 7 feet.  He wants to build a walkway surrounding the pool so that the square footage of the walkway and pool is 143 square feet. How wide is one side of the walkway?

dape · Answer

Do you know how to get the circumference of the pool?

anonymous · Answer

no

dape · Answer

Well, the circumference is just the distance around the pool, so it's 9 feet for each long side and 7 feet for each short side so the total circumference is 9*2+7*2=32 feet. Now if we multiply this number by the width of the walkway we will get the area of the walkway excluding the area in the four corners. I will draw a picture.

dape · Answer

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