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Area is the amount of space occupied by a surface.
The number of squares needed to cover a surface gives a measure of
the area of the surface.
For example, the area of the rectangle ABCD is calculated by
counting the number of squares. So, the area of the rectangle is 40
squares.
E.g. The area of the triangle ABC is calculated by
counting the number of squares. So, the area of the triangle is
approximately 28 squares.
The following are applications of area:
- To calculate the number of tiles to be ordered to tile a kitchen
floor, the area of the kitchen floor must be taken into consideration.
- It is known that 5 litres of paint is needed to cover 50 square
metres. To calculate the amount of paint needed to paint a room,
we need to take into consideration the area of the walls, ceiling and
windows.
- To calculate the amount of glass required for a window, we need to
know the area of the window.
Finding the Area of a Plane Figure
Area is the size of the region enclosed within a plane
figure.
To the carpenter or carpet layer, who is concerned with the amount of
material to be used, measurement of area is very important. An
approximate area of a surface can be found by counting the number of
squares on a surface as illustrated above.
Key Terms
area, surface, approximate
area, counting squares, square
units, hectares
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