Correct
Explanation
The perimeter of a rectangle is twice the sum of its length: perimeter = 2(length + width). The perimeter is 18 feet.
Solve this puzzle
If Brenna had 4 piles of sand and Sara had 5 piles of sand, and they put them all together, how many piles would there be?
100 piles 1 pile 9 piles 10 piles