Find the perimeter of the rectangle, one side of which is 3.4 m and the other is 1.2 m longer than it.

1. To solve this problem, we need knowledge of the following formulas:

The formula for the perimeter of a rectangle: P = 2 * (a + b), where a is the length of the rectangle, b is the width of the rectangle.

2. Let’s first find the second side of the rectangle, we know that it is 1.2 m longer, then we get:

b = a + 1.2 m = 3.4 m + 1.2 m = 4.6 m.

3. Now let’s find the perimeter of the rectangle, substitute the known values into the formula, we get:

Pstraight = 2 * (a + b) = 2 * (3.4 m + 4.6 cm) = 2 * 8 m = 16 cm.

Answer: P straight = 16 m.