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A swimming pool is 50 feet by 150 feet. It is surrounded by a three foot wide deck. Find the area of the deck in square feet.

 Jun 27, 2018
 #1
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Two  sides  of the decking  wil be rectangles with the dimensions [ (150 + 6) * 3]

And the other two sides will be rectangles  with the dimensions  ( 50 * 3)

 

So  the total area of the decking is

 

2 [  (150 + 6) * 3 ]  +  2 (50 * 3)  =

 

2 ( 156 * 3)  + 2 ( 150)  =

 

2 ( 468)  + 2 (150)  =

 

2 ( 468 +150)  =

 

2 ( 618)  =

 

1236  ft^2

 

 

cool cool cool

 Jun 27, 2018
edited by CPhill  Jun 27, 2018
 #2
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[Area of the swimming pool + deck] - [Area of the swimming pool only] = Area of the deck.

[ 156            x                56                     ] - [   150              x                50            ] =

                  8,736                                       -                      7,500                               =1,236 feet^2

 Jun 27, 2018

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