Find the area and perimeter of a rectangle whose length is 8 dm, and the width is three-quarters of the length.

We calculate how many decimeters the width of a given geometric figure will equal, if it is known, according to the conditions of this task, that it is equal to 3/4 of its length:

8 * 3/4 = 6.

Let’s find out how many square decimeters the area of our rectangle will correspond to, with the following dimensions:

8 * 6 = 48.

Let’s find out how many decimeters the perimeter of our rectangle will be measured:

2 * (6 + 8) = 28.

Answer: The area will be 48 dm2, and the perimeter will be 28 dm2.