Quantitative Aptitude · High Importance · 3–4 questions in Exam

Mensuration 2D & 3D Practice & Questions

Mensuration evaluates spatial volume and area calculation for geometric solids, melting/recasting problems, and surface painting costs.

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Core Concepts in Mensuration 2D & 3D

Questions from this topic consistently evaluate the following core principles across SSC, Railways, and Banking papers:

2D Areas: Triangle, Trapezium, Rhombus, Circle sectors
3D Volumes: Cylinder, Cone, Sphere, Hemisphere, Frustum
Melting and reshaping solids (volume remains invariant)
Cutting cylinders and cones along axes

Exam Speed Strategy & Shortcuts

Since π = 22/7 involves 11, many mensuration options are divisible by 11; use divisibility by 11 as a quick check.
In melting problems, equate the total volume of original bodies to the new body.

Exams Testing Mensuration 2D & 3D

Mastering this topic directly contributes to clearing cutoffs in these examinations:

SSC CGL Exam Guide →SSC CHSL Exam Guide →Railway NTPC Exam Guide →Banking PO & Clerk Exam Guide →