45!
45
45
45
45
5x9.
not helpful.
5x9 Feet.
7x9 is the multiplication fact that can be found using the arrays 2x9 and 5x9.
7x9
9
To determine how many 5x9 stones are needed to cover 108 square feet, first calculate the area of one stone. The area of a 5x9 stone is 5 ft × 9 ft = 45 sq ft. Next, divide the total area to be covered by the area of one stone: 108 sq ft ÷ 45 sq ft = 2.4. Since you can't have a fraction of a stone, you would need 3 stones to cover the area completely.
The multiplication fact (singular, not plural 'facts') that can be found is 7x9 = 63. Using the arrays, a 2x9 array (2 rows of 9 items) and 5x9 array (5 rows of 9 items) is 63: 2x9 = 18 5x9 = 45 18 + 45 = 63