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Answer:

In a square, all sides are equal. This means that each side is 3x inches in length.

The sum of the sides is 48 inches

There are 4 sides in a square.

3x + 3x + 3x + 3x = 48

12x = 48 ----> is the equation

This means that x = 4

Each side is 3x inches in length, hence each side is also 3(4) which is 12 inches or 1 feet.

Step-by-step explanation: