The perimeter of the rectangle ABCD is 40 dm. The length of the rectangle is 12 cm. Find the width of the rectangle.
| May 11, 2021 | education
1. Let’s translate the perimeter of the rectangle into cm:
40 dm = 400 cm.
2. To find the width of the rectangle, use the formula a = (P – 2b) / 2, where a is the width of the rectangle, P is the perimeter of the rectangle, b is the length of the rectangle:
a = (400 cm – 2 * 12 cm) / 2 = (400 – 24) / 2 = 376/2 = 188 cm.
Answer: The width of the rectangle is 188 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.
