Mensuration

Learning Objectives

• Understand the fundamental concepts of Mensuration
• Apply key formulas and techniques to solve problems
• Practice with exam-level questions to build speed and accuracy

Key Concepts

Mensuration for SSC GD & Agniveer

Mensuration deals with measurement of geometric figures — area, perimeter, volume, and surface area. These questions appear in SSC GD and Agniveer mathematics and require knowledge of formulas for 2D and 3D shapes.

Key Concepts

2D Shapes: Square (area = side², perimeter = 4×side). Rectangle (area = l×b, perimeter = 2(l+b)). Triangle (area = ½×base×height). Circle (area = πr², circumference = 2πr). 3D Shapes: Cube (volume = side³, SA = 6×side²). Cuboid (volume = l×b×h, SA = 2(lb+bh+hl)). Cylinder (volume = πr²h, CSA = 2πrh). Sphere (volume = 4/3 πr³, SA = 4πr²). Cone (volume = 1/3 πr²h, SA = πrl).

Solved Examples