Final answer:
To determine the number of dimensions of an array, count its levels of indexing. To express the area of an array as a square, calculate the square of the side length for equal sides or multiply two adjacent sides for a rectangle, and to find the side length for a square of the same area, take the square root of the area.
Step-by-step explanation:
When you ask about returns the number of dimensions of an array, you are inquiring about how to determine its dimensional structure. For instance, a 1D array has one dimension, a 2D array has two dimensions, and so on. If you want to express the area an array will occupy in terms of square meters and side length, you are essentially calculating the size of a square that would cover the same area as the occupied by the array.
To determine the area in square meters, you would multiply the lengths of two adjacent sides if it's a 2D array. If the array represents a square with equal side lengths, you'd square the length of one of its sides. To find the side length for a square of the same area, you would take the square root of the area.