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PRERNA FOR IAS
Surface Areas and Volumes
1. Introduction
Surface Areas and Volumes deals with measuring the outer covering and space occupied by three-dimensional objects. Many real-life objects are combinations of basic solids such as cubes, cuboids, cylinders, cones, hemispheres, and spheres. Surface area measures exposed surfaces, while volume measures the capacity or space enclosed within solids.
2. Important Formula Revision
This chapter requires remembering formulas for Curved Surface Area (CSA), Total Surface Area (TSA), and Volume of basic solids. Cube, cuboid, cylinder, cone, hemisphere, and sphere are the foundation for solving problems. Correct application of formulas and dimensions helps in calculating surface areas and volumes accurately.
3. Surface Area of Combination Solids
Combination solids are formed by joining two or more basic solids. To find their surface area, only visible or exposed surfa
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Learn surface areas and volumes of 3D shapes including cubes, cylinders, cones, and combination solids with formulas and practical applications for competitive exams.
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