A square has four sides of equal length. A rectangle has lengths that are different from the widths.
You can't find the widths of a rectangle with the lengths because the widths can be anything lower than the lengths. Like if your rectangle had a length of 7 the width can be 6, 5, 4, 3, 2, and so on.
A rectangle has lengths different from the widths. (12" x 8" is a rectangle). A square has all sides of equal length. (7" x 7" is a square).
You can't tell the dimensions from the perimeter. There are an infinite number of different rectangles, all with different lengths and widths, that all have the same perimeter.
Different pools have different proportions.
rectangle
A square has four sides of equal length. A rectangle has lengths that are different from the widths.
You can't find the widths of a rectangle with the lengths because the widths can be anything lower than the lengths. Like if your rectangle had a length of 7 the width can be 6, 5, 4, 3, 2, and so on.
stay the same
A rectangle has lengths different from the widths. (12" x 8" is a rectangle). A square has all sides of equal length. (7" x 7" is a square).
A rectangle has 2 equal widths and 2 equal lengths whereas a rhombus has 4 equal widths but they are both 4 sided quadrilaterals.
9x2 . 2x9 . 18x1 . 1x18 . 3x6 . 6x3 all = 18
Four - two lengths (sides) and two widths (ends).
You can't tell the dimensions from the perimeter. There are an infinite number of different rectangles, all with different lengths and widths, that all have the same perimeter.
There are plenty of information you can learn about rectangles. You can learn about their angles, their widths and lengths, as well as their volumes.
Different pools have different proportions.
One possibility is 15 x 5 (therefore perimeter is 15 x 15 x 5 x 5 = 40cm).