The width of a rectangle is 15 cm, which is 3 cm less than its length. Find the width of another rectangle

| August 11, 2021 | education

The width of a rectangle is 15 cm, which is 3 cm less than its length. Find the width of another rectangle with the same area if its length is 12 cm longer than the length of the first rectangle.

To solve this problem, recall the formula for the area of a rectangle. The area of the rectangle is equal to the product of the length and the width. S = a * b, where a is the length and b is the width. Knowing that the width is 15 cm, we calculate the length.
15 + 3 = 18 cm. Knowing that the length is 18 cm and the width is 15 cm, we calculate the area of the rectangle.
S = 18 * 15 = 270 cm ^ 2.
Let’s calculate the length of the second rectangle.
18 + 12 = 30 cm.
Let’s calculate the width of the second rectangle knowing that its area is 270 cm ^ 2, and its length is 30 cm.
b = 270/30 = 9 cm.
Answer: 9 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.