The base of the rectangle is 3.2 dm height 12 cm shorter, find the perimeter of this rectangle.

1 action.

For an easy solution to the problem, we will translate all the data into one unit of measurement. Best of all translates into a smaller one, it will be in a centimeter.

10 cm = 1 dm.

3.2 dm = 32 cm.

2 action.

We find the height. The height is 12 cm shorter than the base, which means we are doing a subtraction.

32 – 12 = 20 cm.

3 action.

Find the perimeter of the rectangle. First, let’s remember the definition of what a rectangle is. A rectangle is a quadrilateral in which the parallel sides are equal and intersect at right angles.

32 * 2 + 20 * 2 = 64 + 40 = 104 cm = 10 dm 4 cm.

Answer: the perimeter of the rectangle is 10 dm 4 cm.