60
96 rectangles.
seven
To find the number of rectangles that can be formed using 15 squares, we consider the arrangement of squares in a rectangular grid. If the squares are arranged in a rectangular grid of dimensions (m \times n) such that (m \cdot n = 15), the possible pairs are (1, 15), (3, 5), (5, 3), and (15, 1). For each grid arrangement, the number of rectangles can be calculated using the formula (\frac{m(m+1)n(n+1)}{4}). However, without specific grid dimensions, the total number of rectangles depends on how the squares are arranged.
In a 4 by 4 grid, there are 16 squares (1x1 squares), 9 rectangles that are 2x1, 6 rectangles that are 3x1, 4 rectangles that are 2x2, and 1 rectangle that is 4x4. Therefore, in total, there are 16 squares and 20 rectangles in a 4 by 4 grid.
10
96 rectangles.
4 rectangles
14
90
9
seven
None they're all squares.
In a 4 by 4 grid, there are 16 squares (1x1 squares), 9 rectangles that are 2x1, 6 rectangles that are 3x1, 4 rectangles that are 2x2, and 1 rectangle that is 4x4. Therefore, in total, there are 16 squares and 20 rectangles in a 4 by 4 grid.
10
There are 2025 rectangles in a 9x9 grid.
Just four rectangles comprise 64 squares of the same size: 1X64, 2X32, 4X16, and 8X8.
That depends on how big the rectangles are.