Draw a rectangle that is 4 cm wide, which is 1/3 of its length. Find the perimeter of the rectangle.

To solve this task, you need to find the perimeter of the rectangle and its sides;

Consider this task and analyze it;

By the condition of the assignment, we know that the side of the rectangle is four centimeters and this value is one third of the length of the second side; To find the perimeter, you need to find the second side;

Let’s designate the unknown side as a unit and write down the proportion;

1/3 – 4;

1 – x;

x = 4 / 1/3 = 4 * 3 * 1 = 12cm second side;

Knowing both sides, we find the perimeter;

P = (a + b) * 2 = (4 + 12) * 2 = 32cm.