RD Sharma Solutions for Class 9 Maths Chapter 18 Surface Area and Volume of Cuboid and Cube

Surface area and volume are calculated for any three-dimensional geometrical shape. The surface area of any given object is the area or region occupied by the surface of the object. At the same time, the volume is the amount of space available in an object. In geometry, there are different shapes and sizes, such as a sphere, cube, cuboid, cone, cylinder, etc.

A cuboid is a three-dimensional shape, so to find the volume of a cuboid, we need to know three measurements i.e. Length, Width and Height. The volume of the cuboid is equal to the product of the area of one surface and height. Volume of the cuboid = (length × breadth × height) cubic units. Volume of the cuboid = (l × b × h) cubic units. Example: If the length, breadth and height of a cuboid are 5 cm, 3 cm and 4 cm, then find its lateral surface area.