The length of the rectangle is 15 cm 4 mm, and the width is 2 times less. Thread perimeter.

Determine how many millimeters the length of the rectangle is, knowing that one centimeter, by definition, contains 10 millimeters:

15 * 10 + 4 = 154.

Let us determine how many millimeters the width of this rectangle is, knowing that it is twice as short as the length:

154: 2 = 77.

Let’s determine how many millimeters the width of this rectangle is, knowing that it is, by definition, equal to the sum of its length and its width multiplied by two:

2 (154 + 77) = 462.

Answer: The perimeter is 462 mm.