The rectangle has a perimeter of 6564 cm and one of its dimensions is 1238 cm. Find the second dimension.

We express the sought unknown second dimension using the conditional variable “Y”.
Based on the data in this example and applying the formula for the perimeter of a rectangle, we get the following expression: 6564 = (Y + 1238) x 2.
When we make the calculation, we will have the following result Y + 1238 = 6564/2 = 3282 or Y = 3282 – 1238 = 2044 cm.
Answer: 2044 cm.