This math topic focuses on using the Cartesian grid to determine dimensions of rectangles based on their area, limited to positive coordinates only. It aims to enhance skills in extracting height and width of a rectangle when given the area by analyzing provided graphical representations. The set of problems requires a practical application of multiplication and division concepts within the context of geometry, with an introductory level of difficulty related to Cartesian grid geometry logic. Each question displays a diagram, and students have to analyze height or width from the area value given.