The perimeter of a rectangle is given by the formula P = 2L + 2W, where L is the length and W is the width. We know the perimeter, P, is 40 feet, and the width, W, is 8 feet. Substituting these values into the formula, we get 40 = 2L + 2(8).
Simplifying the right side of the equation, we have 40 = 2L + 16.
Subtracting 16 from both sides, we get 24 = 2L.
Dividing both sides by 2, we find L = 12.
The length of the dog run will be 12 feet. Answer: \boxed{12}.
Sari 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 a width of 8 feet. What will the length be, in feet?
3 answers
Sari 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 a width of 8 feet. What will the length be, in feet?
ose has a comic book collection that he keeps among 5 shelves with an equal number on each shelf. His father adds 20 comic books to the bottom shelf, so the shelf now has 125 books. How many total books are in his collection? Use algebra to solve the equation.
3 answers