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CBSE - VI
Area
Area
The amount of surface enclosed by a closed figure is called its area.
Lesson Demo
The amount of surface enclosed by a closed figure is called its area.
The following conventions are to be adopted while calculating the area of a closed figure using a squared or graph paper.
Count the fully-filled squares covered by the closed figure as one square unit or unit square each.
Count the half-filled squares as half a square unit.
Count the squares that are more than half-filled as one square unit.
Ignore the squares filled less than half.
For example, the area of this shape can be calculated as shown:
Covered area |
Number |
Area estimate (sq. units) |
Fully filled squares |
6 |
6 |
Half–filled squares |
7 |
7 x ½ |
Squares filled more than half |
0 |
0 |
Squares filled less than half |
0 |
0 |
Area covered by full squares = 6 x 1 = 6 sq. units
Area covered by half squares = 7 x ½ = 7/2= 3 ½ sq. units
Total area of the given shape = 6 + 3 ½ sq. units
Thus, the total area of the given shape = 9 ½ sq. Units
Area of a rectangle can be obtained by multiplying length by breadth. Area of the square can be obtained by multiplying side by side.
