A = 2*a + 2*b
A = a * b
A = area
P = perimeter
a = side "a"
b = side "b"
The sides of the rectangle are, for example, a is 8 cm and b is 6 cm.
Thus
a = 8,
b = 6.
perimeter of the rectangle:
We use the formula
C = 2 * a + 2 * b
thus
C = 2 * 8 + 2 * 6
C = 28 cm
area of the rectangle:
We use the formula
A = a * b
thus
A = 8 * 6
A = 48 cm²