The perimeter of the rectangle is 16 cm. Its width is 4 cm less than the length.

The perimeter of the rectangle is 16 cm. Its width is 4 cm less than the length. Find the sides of the rectangle. Find the sides of the rectangle.

It is known from the condition that the perimeter of a rectangle is 16 cm. It is also known that its width is 4 cm less than its length. In order to find the sides of the rectangle, we compose and solve the equation.

Let’s denote the length of the rectangle with the variable x cm, then the width is (x – 4) cm.

Let’s remember the formula for finding the perimeter of a rectangle.

P = 2 (a + b);

Let’s make the equation:

2 (x + x – 4) = 16;

2x – 4 = 16: 2;

2x – 4 = 8;

2x = 8 + 4;

2x = 12;

x = 12: 2;

x = 6 cm is the length of the rectangle, and 6 – 4 = 2 cm is the width of the rectangle.