One side of the rectangle is 9mm, the other is 3 times larger. Find the perimeter and area of the rectangle.

We will solve this task in steps and explain each of them in detail.

1) 9 * 3 = 27 millimeters – the length of the larger side of the rectangle, since it is 3 times larger than the smaller side, and the smaller side is 9 millimeters;

2) 2 * (27 + 9) = 2 * 36 = 72 millimeters – the perimeter of a rectangle with sides of 9 millimeters and 27 millimeters;

3) 27 * 9 = 243 cm ^ 2 – the area of a rectangle with sides of 9 millimeters and 27 millimeters.

Answer: 72 millimeters; 243 cm ^ 2.