An area is the amount of space covered by a shape: Take look at the square shape below:
The area of the square marked is 1cm2. There are 480 of this square ion the entire graph sheet. This graph sheet means that the area of the entire graph sheet is 480 x 1cm2 = 480cm2
You will see that the total number of unit squares in the given shape is the area of the shape. Area is measured in cm2.
Using Tiles to Find Area : What is the shape of the floor tile below? Have you seen a tile before? The shape pf a floor tile is square. The Area of the floor tile is 50cm x 50cm = 2500cm2. If a bedroom shown below has 20 floor tiles, What is the area of the bedroom floor?
Multiply the area of the tile by number of the tiles = 20 x 2500cm2 = 50,000cm2. In meters, the area of one tile is 0.5 x 0.5 = 0.25m2. The area of the entire room is 20 x 0.25 = 5m2.
Activity
Which square area is bigger, lcm 2 or 1m 2
Using a cardboard paper, cut a lcm2 paper and 1m2 paper.
If we need to measure the area of this classroom, which unit would appropriate?
Ening, a B. 4 pupil at Ejisu Model School chose to use cm2 to measure area of the classroom.Ampong who is also in the same class also ch0S( measure the area of the classroom in m 2.
Let us attempt to use each unit to measure the area of the class.VVhic more appropriate?
Using m2 to measure the area of the classroom is more appropriate. difficult to measure the area of the class in cm 2.We need too many of 1 cm2 .
However, it is better to measure the area of an exercise book in cm 2 m2.The exercise book is far less than 1m2.
Measure the area of your exercise book in cm2 .
In summary, smaller surfaces whose area could be less than 1m2 is be measured in cm2. Example, the screen of a mobile phone, matchbox, e: cise book, desk etc.
The area of bigger surfaces, such as a football field, a classroom, the hi teacher’s office is measured in m 2