The length of the total boundary of a figure is called its perimeter. The Metric unit of perimeter is same as the unit of length - Metre.
The perimeter of 2D geometrical figures like quadrilaterals can be obtained by calculating the sum of all the sides of the figure.
The amount of surface covered by an object is called it area. The Metric unit of area is square metre.
Surface Area - is the measure of total area of all the flat and curved
surfaces of a three -dimensional (like a Polyhedron) figure.
Units : mm2 , cm2 , dm2 , m2 , km2
Volume - is the measure of the space occupied by a three-dimensional figure.
Units : mm3 , cm3 , dm3 , m3 , km3
SmartTest on Area and Perimeter of Rectangles
SmartTest on Area and perimeter of Compound Shapes
SmartTest on Surface Area and Volume of Cube and Cuboid