The length of the rectangle is 9 cm, the width is 3 times less than the length. You need to find the perimeter and area of the rectangle.

A rectangle is a rectangle with equal opposite sides and right angles.
Its area (numerical characteristic of a two-dimensional geometric figure) is calculated by the formula:
S = a * b.
The perimeter is the sum of all sides. For such a figure, it is determined by the formula P = 2a + 2b.
1) Find the width of the rectangle, provided that it is 3 times less than the length equal to 9 cm:
9: 3 = 3 cm.
2) P = 2 * 9 + 2 * 3 = 18 + 6 = 24 cm.
3) S = 9 * 3 = 27 cm².