# 5% of the length of one side of the rectangle is 8 cm. The length of the second side

July 28, 2021 | education

| **5% of the length of one side of the rectangle is 8 cm. The length of the second side is equal to 65% of the length of the first. Find the area of a rectangle?**

Let’s calculate the length of the first side by making a proportion and expressing this length in terms of f:

8 cm – 5%,

f – 100%.

f = 8 * 100: 5;

f = 800: 5;

f = 160 cm – the length of one side of the rectangle.

Let’s calculate the length of the second side of the rectangle by making the proportion and expressing the length of the second side in terms of j:

160 cm – 100%,

j – 65%.

j = 160 * 65: 100;

j = 10400: 100;

j = 104 cm is the length of the second side of the rectangle.

Let’s calculate the area of this rectangle:

160 * 104 = 16640 cm2 – the area of this rectangle.

Answer: S = 16640 cm2.

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.