The length of the rectangle is 5 cm, the width is 4 cm. How does the area of the rectangle change

The length of the rectangle is 5 cm, the width is 4 cm. How does the area of the rectangle change if its length is increased by 2 times, and its width by 3 times?

Given:
The length of the first rectangle is 5 centimeters.
The width of the rectangle is 4 centimeters.
The length of the second figure is doubled.
The width of the second quadrangle is increased by 3 times.
Find the area of the first figure:
S1 = 5 * 4 = 20 cm2.
Let’s calculate the length of the second figure:
5 * 2 = 10 centimeters.
find the second width:
4 * 3 = 12 cm.
Let’s calculate the area of the second rectangle:
10 * 12 = 120 cm2.
Let’s find the difference in areas:
120 – 20 = 100 cm2.
Answer: the area of the rectangle will increase by 100 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.