The perimeter of the rectangle is 380 cm. Find its width if the length is 12dm.
| December 26, 2020 | education
perimeter is the sum of lengths: P = 2 * (a + b), then a + b = P / 2 = 190 cm
12 dm = 120 cm, then the width is 190-120 = 70 cm or 7 dm
Answer: 70 cm or 7 dm
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.
