The perimeter is the total distance around the edge of a 2D shape. Since it is a length, the metric units for perimeter are millimetres (mm), centimetres (cm), metres (m) and kilometres (km).

Before starting this guide, it may be helpful to read the guide from Module 3 (M3) on perimeter, area and volume involving sectors, cylinders, cones and spheres. \(\text{area} = ...

Maths Three Dimensional Geometry Formulas: The class 12 mathematics course is predominantly calculus based but there are other chapters that hold significant importance and marks weightage in exams.