The perimeter of the rectangle is 28 cm. Its length is 4 cm greater than the width. Find the length and width of the rectangle.

In order to solve this problem, you will have to draw up an equation. But first, let’s create a short condition:
The perimeter of the rectangle is 28 cm;
Length -? 4 cm wider;
Width -? cm;
The formula for the perimeter of a rectangle will be:
P = 2 (a * b);
Let x cm be the width of the rectangle, then x + 4 cm is the length. Since the perimeter of the triangle is 28 cm, we have the equation:
2 * (x + x + 4) = 28;
x + x + 4 = 14;
2x + 4 = 14;
2x = 14 – 4;
2x = 10;
x = 10: 2;
x = 5 cm – width;
5 + 4 = 9 cm – length;
Answer: 5 and 9 cm.