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Paha777 [63]
2 years ago
10

3) Puan wishes to build a garden at the bottom of his property. He wants to split in

Mathematics
1 answer:
frozen [14]2 years ago
3 0

The area of the garden is the product of its dimensions

  • The dimension that maximizes the area is 20 by 60
  • The maximum area is 1200 square feet

From the figure (see attachment), the perimeter is:

\mathbf{P  = 3x + y}

The perimeter is given as: 120.

So, we have:

\mathbf{3x + y = 120}

Make y the subject

\mathbf{y = 120 - 3x}

The area is then calculated as:

\mathbf{A =xy}

Substitute \mathbf{y = 120 - 3x}

\mathbf{A =x(120 - 3x)}

\mathbf{A =120x- 3x^2}

Differentiate

\mathbf{A' =120- 6x}

Set to 0

\mathbf{120- 6x = 0}

Rewrite as:

\mathbf{6x = 120}

Divide through by 6

\mathbf{x = 20}

Recall that: \mathbf{y = 120 - 3x}

So, we have:

\mathbf{y = 120 - 3(20)}

\mathbf{y = 120 - 60}

\mathbf{y =60}

The dimension that maximizes the area is 20 by 60

The area is calculated as:

\mathbf{A =xy}

So, we have:

\mathbf{A = 20 \times60}

\mathbf{A = 1200}

Hence, the maximum area is 1200 square feet

Read more about maximum areas at:

brainly.com/question/11906003

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