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).

These math riddles on area and perimeter are to help you prepare for your exam, be it school or competitive. Test your math skills now with these math riddles. Are you looking for some tough math ...

Mathematics for CBSE Class 9 introduces many foundational concepts that serve as building blocks for higher classes. Topics such as algebraic identities, the surface areas and volumes of 3D shapes, ...