The width of the rectangle is 19 decimetres, which is 7 dm less than its length. Find the perimeter of the rectangle.

1. Let’s calculate the length of the rectangle.

19 + 7 = 26 decimetres.

2. From the course of mathematics, we must remember that the perimeter of a rectangle is equal to the sum of the lengths of all four of its sides.

19 + 19 + 26 + 26 = 90 decimetres.

Answer: The perimeter of the rectangle is 90 decimeters.



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