The Indian Institutes of Management (IIMs) will conduct the CAT 2023 exam, a computer-based test for admission into management programs. The exam covers Math, English and Reading, and Data and Logic. The Mensuration section focuses on topics like area and perimeter of 2D figures, volume of 3D shapes, similarity and congruence of figures, composite figures, and surface area. To excel in this section, candidates should have a strong understanding of geometric shapes, volume formulas, surface area formulas, and problem-solving techniques. Practicing realistic problems is also recommended.