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A contractor is building a desk around a 15 x 20 rectangular swimming pool. He is going to build a 2-foot desk around the pool.

Sagot :

MrRoyal

Answer:

[tex](15 + 2x)(20 + 2x)[/tex]

Step-by-step explanation:

Given

[tex]Length= 15[/tex]

[tex]Width = 20[/tex]

[tex]Deck = x[/tex] --- on both sides

Required

An expression for total area of the pool

Because the deck will be on both sides,

the dimension of the pool will be:

[tex]L = Length + 2 * deck[/tex] --- Length

[tex]L = 15 + 2x[/tex]

[tex]W = Width + 2 * deck[/tex] --- Width

[tex]W = 20 + 2x[/tex]

The total area of the pool is calculated as:

[tex]Area = Length * Width[/tex]

[tex]A = (15 + 2x) * (20 + 2x)[/tex]

[tex]A =(15 + 2x)(20 + 2x)[/tex]

Hence, the expression is: [tex](15 + 2x)(20 + 2x)[/tex]

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