The area of a rectangle is 56 centimeters What is the perimeter of this rectangle if its length is 8 centimeters.

As you know, the area of a rectangle is calculated by the formula: S = a * b, where a is the length of the rectangle, b is the width of the rectangle.
Substitute all known values into the formula and calculate the second side of the rectangle: 56 = 8 * b.
b = 56/8 = 7 cm.
As you know, the perimeter of a rectangle is calculated by the formula: P = (a + b) * 2, where a is the length of the rectangle, b is the width of the rectangle.
Let’s calculate the perimeter of the rectangle: P = (8 + 7) * 2 = 15 * 2 = 30 cm.
Answer: the perimeter of the rectangle is 30 cm.