One second of the area of the rectangle is 12 cm2. Its length is 6 cm. Find the perimeter of the rectangle.

½ is the same as half. According to the condition of the assignment, ½ part of the area of the rectangle is 12 cm², therefore, S = 12 * 2 = 24 cm².

The length of such a figure = 6 cm.Before finding the perimeter, it is necessary to express the width from the area formula:

If S = a * b, then b = S: a.

Substitute the known values and get:

b = 24: 6 = 4 cm.

The sum of all sides is calculated by the formula:

P = 2a + 2b = 2 * 6 + 2 * 4 = 12 + 8 = 20 cm.