The length of one side of the rectangle is 8 cm and the length of the other side is three quarters

| July 6, 2021 | education

The length of one side of the rectangle is 8 cm and the length of the other side is three quarters of the length of the first. Calculate the perimeter and area of the rectangle.

The problem says that the length of one side of the rectangle is 8 cm, and the other ¾ of the length of the first. The fraction 3/4 means that the length of one side of the rectangle was divided into 4 equal parts and 3 parts were taken from them. Therefore, we can write it like this:

8 ÷ 4 = 2 cm.

In this case, 2 cm is one part of four parts, and according to the condition we need to take three such parts, i.e.,

2 × 3 = 6 cm – the length of the second side of the rectangle.

It is known that the perimeter of a rectangle is the sum of all sides, while a rectangle has two widths and two lengths. Means,

P = 8 + 8 + 6 + 6 = 16 + 12 = 28 cm.

To find out the area of ​​a rectangle, you need to multiply its length by its width. Hence,

S = 8 × 6 = 48 cm ^ 2.

Thus, the perimeter of the rectangle is 28 cm and the area is 48 cm ^ 2.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.