## Mensuration

Category : 5th Class

MENSURATION

FUNDAMENTALS

•                  Perimeter, the length of the sides enclosing the figure is called its perimeter.

Perimeter of square$=4\times \,\,side=4a$

Perimeter of rectangle = 2 (length + breadth)$=2(l+b)$

Perimeter of triangle = sum of its sides$=(AB+BC+CA)$

•                  Area: The area of any figure is the plane space occupied by it or the amount of surface enclosed within its boundary lines.
•                  It is measured in square units i.e. Square meter$({{m}^{2}})$, Square centimeter $(c{{m}^{2}})$etc.

Area of square$={{(side)}^{2}}={{a}^{2}}\,\,sq.\,\,unit$

Area of rectangle= length $\times$ breadth$=l\times b$Sq. unit.

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