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**Answer:**

1) Yoga

2) Help increase muscle size.

3) How your body uses oxygen

4) an activity that gets you exercising so hard that you can only say a few words

**Explanation:**

**Answer:**

The length of the fencing is 60 feet.

**Explanation:**

At first we remember that the perimeter formula of the rectangular fence is represented by:

**(1)**

Where:

- Width, measured in feet.

- Length, measured in feet.

- Perimeter, measured in feet.

From statement, we know the following relation:

**(2)**

By applying **(2)** in **(1)** we expand the equation above:

If we know that , the width of the fencing is:

And the length of the fencing is:

The length of the fencing is 60 feet.