One side of a rectangle of 9 cm is 6 cm less than the other side of it, the pyrimeter and area

One side of a rectangle of 9 cm is 6 cm less than the other side of it, the pyrimeter and area of the rectangle were calculated.

b = 9 cm.
a =? = b + 6 cm.
P =?.
S =?.

Let’s calculate the length of the rectangle, provided that it is 6 cm more than its width:
9 + 6 = 15 cm.

The perimeter is the sum of all sides. For such a figure, it corresponds to the formula:
P = 2a + 2b = 2 * 15 + 2 * 9 = 30 + 18 = 48 cm.

The area is calculated by the formula:
S = a * b = 15 * 9 = 135 cm².