The width of the rectangle is 5 dm and the length is 8 dm. write an expression to calculate
| August 10, 2021 | education
The width of the rectangle is 5 dm and the length is 8 dm. write an expression to calculate the perimeter of this rectangle.
Let’s clarify that the sum of the lengths of all its sides is called the perimeter of a rectangle.
The problem is solved by adding: 5 + 8 + 5 + 8 = 26 dm.
The opposite sides of the rectangle are equal.
The sum has the same terms, so the solution can be written differently: 5 + 5 + 8 + 8 = 26 dm.
Other solutions.
5 * 2 + 8 * 2 = 26 dm. (Take 5 dm 2 times and take 8 dm 2 times).
(5 + 8) * 2 = 26 dm. (After studying the property of multiplying a sum by a number).
Answer: the area of the rectangle is 26 decimeters.
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