The rectangle is 14 cm wide, 6 cm longer than wide. calculated the perimeter of the rectangle.

The rectangle has 4 sides. So we get: P = a + b + a + b.
If we simplify the expression from paragraph 1, by reducing similar terms, we get: 2a + 2b. You can already use this formula to calculate the perimeter. Or you can simplify slightly by taking out the common factor outside the parenthesis. Let’s take the number 2 out of the bracket. We get: 2a + 2b = 2 (a + b).
We substitute the values ​​from the condition: the width of the rectangle b = 14 cm, and its length is 6 cm more than the width, which means that we need to add the number 6. to the value of the width. We get: a = 14 + 6 = 20 cm. Then we substitute in the perimeter formula: P = 2 (20 + 14) = 2 * 34 = 68 cm.
Answer: P = 68 cm.