Siri is creating a dog run space in her backyard. She has 40 feet of fencing to go around the outside and she wants to make it rectangular with the width of 8 feet. What will be the length and feet.
Let's assume the length of the dog run space is L feet.
Given that the width is 8 feet, and the length is L feet, the total perimeter should be equal to the total length of the fencing.
The formula for the perimeter of a rectangle is P = 2L + 2W, where P is the perimeter, L is the length, and W is the width.
In this case, the perimeter is 40 feet, and the width is 8 feet. Therefore, we can write the equation as:
40 = 2L + 2(8)
Simplifying, we get:
40 = 2L + 16
Subtracting 16 from both sides of the equation gives:
24 = 2L
Dividing both sides of the equation by 2 gives:
12 = L
Therefore, the length of the dog run space is 12 feet.