Question

Please help. I dont understand.

Answer 1

300 inches

Explanation:

In the given arrangement of 12 tiles within a larger square, there are essentially 4 rows and 3 columns.

The individual side lengths of the tiles are not crucial to determining the side length of the larger square. The top edges of the tiles in each row sum to the length of one side of the square. Similarly, the bottom edges of the tiles in each row sum to the length of one side of the square. The left edges of the tiles in each column sum to the length of one side of the square. Similarly, the right edges of the tiles in each column sum to the length of one side of the square. Therefore, there are a total of 8 horizontal edges and 6 vertical edges contributing to the perimeter of the larger square.

The sum of the perimeters of these 14 edges is given as 4200 inches. So, to find the length of one side of the larger square, we can divide the total perimeter by the number of sides:

`(4200)/(14) = 300 \; \sf inches`

Hence, the side of the wall measures 300 inches.