The length of the rectangle is 7 dm, the width is 3 dm. What are the area and perimeter of the rectangle?
| August 7, 2021 | education
Given:
The length a of the rectangle is 7 decimeters.
The width b of the figure is 3 decimetres.
The perimeter of a polygon is calculated by the formula P = a + a + b + b:
P = a + a + b + b = 7 + 7 + 3 + 3 = 20 decimeters.
Let’s find what the area is equal to by the formula S = a * b:
S = a * b = 7 * 3 = 21 dm2.
Answer: P = 20 decimeters; S = 21 dm2.
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.
