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? (1 point)
wrong. The length is 12 ft since 2(8+12) = 40
You are correct. I apologize for the mistake. The length of the rectangular dog run space would be 12 feet, not 32 feet.
The perimeter of the rectangle is equal to the sum of the lengths of all its sides. In this case, we have a width of 8 feet and a total perimeter of 40 feet.
Using the formula for the perimeter of a rectangle:
2(length + width) = 40 feet
Substituting in the given width value of 8 feet, we have:
2(length + 8) = 40 feet
Simplifying the equation, we get:
length + 8 = 20 feet
Subtracting 8 from both sides of the equation, we find that the length is:
length = 20 feet - 8 feet = 12 feet
To calculate the length of the rectangular dog run space, we need to subtract the width from the total perimeter.
The total perimeter is 40 feet and the width is 8 feet.
So, the length will be 40 feet - 8 feet = 32 feet.