Chhattisgarh Board CHAPTER- 19 Area class 5 maths | cg board class 5 maths area
0Chhattisgarh Board CHAPTER- 19 Area class 5 maths | cg board class 5 maths area
Arrange books on the table in your class such that no book covers the other
and all the books are of the same size.
How many books did you need
to cover the whole table?
Hence the surface area of table =
surface of ............... books.
Now do a similar activity using
copies. If you don’t find copies of the
same size, use only one and measure how
many times you needed to cover the
whole table.
You can take the help of your
teacher in doing this.
You can do this using a slate too.
Now complete the given tableSurface of table = Surface of ............. books.
Surface of table = Surface of ............. copies.
Surface of table = Surface of ............. Slates.
Sometimes while keeping books on the surface of the table is does not cover
the table completely. Some portion of the table, is left uncoverd.
If it happens, can we say that the surface area of the table is equal to the
number of books kept on the table? Discuss with your teacher.
The measure of the surface of figure is the area of that figure.
Arrange bangles on the surface of the table in such a way that they touch
each other
• How many bangles did you arrange?
Is there space between the bangles?
• Was there space between the books you had arranged?
• Can you find the area of a surface using bangles?
• To measure the area of the surface, is it necessary to cover the whole
surface with same units.
Which of the figures are completely covered?
Now arrange the rectangles of 3cm x 1cm on these figures.
Are the figure completely covered?
Now use the pieces of measurement of 1 cm x 1 cm and cover the surfaces.
Have the figures been covered completely now?
You saw that it was only with the pieces of 1 cm x 1 cm that the given figures
If we multiply the length with the breadth we get 3 x 2 = 6
You are given a rectangle whose length is 5 cm and breadth is 4 cm. Find the
area of this rectangle.
How many unit squares can you make inside this rectangle?
Can we say that the number of unit squares made in any rectangle is always
equal to the product of the breadth and the length?\nwere completely covered.
We use unit square to measure the area.
We use 1 cm × 1 cm square to measure the area of small figures.
And to measure the area of bigger figures we can use 1 m × 1 m square or
more than this if required.
Inside any rectangle you can make unit squares equal to the product of the
length and the breadth.
3. If a rectangle is 15 metre long and 6 metre wide, what is its area?
It may happen that we know the area of a rectangle and we also know either
the length or breadth, then can we find the other?
Let us try. The rectangle given below has been divided into 12 unit squares,
hence its area is 12 square unit.
There are 4 squares in the length and 3 squares in its breadth.
If we divide 12 by 4 we get the result as 3; which is the breadth.\n4. The side of a square is 9 metre; find the area of this square.
5. Find the area of a square whose side is 16 cm. long.
6. The Kabbadi field is 14 metre long and 8 metre broad. What will its area be?
7. ___ metre long and 4 metre broad room. Find its area. (You can choose
your own length.)
8. A carrom board has a side of 75 cm. Find its area.
9. What will be the area of a square garden whose side is of 55 m.
10. The length of a playground is twice its breadth. If the breadth is 9 metre.
Find the area of the field.
Now you solve these1. The area of the floor of a room is 18 square metre.
If the breadth of the room
is 3 metre, find the length of the room.
2. A rectangular field is 35metre long. If the area of the field is 700 square
metre, find the breadth of the field.
3. A 40 cm broad table has an area of 2800 square cm. What is the length of the
table?
4. The area of a theater floor is 81 square meter. Find the breadth, if the length
of the floor is 9 metre.
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