# The perimeter of the rectangle is 80cm. Find the sides of the rectangle if one side is 4cm larger than the other.

July 26, 2021 | education

| 1) Let’s find out how long the first side of the rectangle has, if it is known that the second is 4 cm longer, and its perimeter is 80 cm.We compose an equation where:

X – width;

X + 4 – length;

80 – perimeter.

(X + X + 4) * 2 = 80;

2X + 2X + 8 = 80;

4X = 80 – 8;

4X = 72;

X = 72/4;

X = 18 cm.

2) We find out the length of the second side of the rectangle if it is known that it is 4 cm longer than its first side, and we found out the length of the first side and it was 18 cm.

18 + 4 = 22 cm.

Answer: the sides of the rectangle are 18 cm and 22 cm.

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.