Suppose you want to build an outdoor rectangular pen enclosed by fencing for a pet. You want the pen to have an area of 64 square feet. Write and post one set of dimensions that could be used for the pen, along with the perimeter of the pen.

8 * 8 = 32 feet perimeter

4 * 16 = 40 feet perimeter
2 * 32 = 68 feet perimeter

To find the dimensions and perimeter of the rectangular pen, we can use the formula for the area of a rectangle:

Area = length * width

In this case, the given area is 64 square feet. We need to find two numbers that multiply together to give 64.

To simplify the process, we can start by finding the factors of 64:

1 * 64
2 * 32
4 * 16
8 * 8

From these options, we see that the dimensions that could be used for the pen are 8 feet by 8 feet, as 8 * 8 = 64.

To find the perimeter of the pen, we can use the formula for the perimeter of a rectangle:

Perimeter = 2 * (length + width)

In this case, the length is 8 feet and the width is also 8 feet. Plugging in these values into the formula, we have:

Perimeter = 2 * (8 + 8) = 2 * 16 = 32 feet

So, the dimensions for the pen are 8 feet by 8 feet, and the perimeter is 32 feet.