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The width of the rectangular pen is equal to 14 feet.

Given the following data:

  • Perimeter of rectangle = 78 feet.
  • Length = 25 feet.

To calculate the width of the rectangular pen:

Formula for the perimeter of a rectangle.

Mathematically, the perimeter of a rectangle is given by the formula;

[tex]P=2(L+W)[/tex]

Where:

  • P is the perimeter of a rectangle.
  • L is the length of a rectangle.
  • W is the width of a rectangle.

Substituting the parameters into the formula, we have;

[tex]78=2(25+W)\\\\78=50+2W\\\\2W=78-50\\\\2W=28\\\\W=\frac{28}{2}[/tex]

Width, W = 14 feet.

Read more on the width of a rectangle here: https://brainly.com/question/17297081

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