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E:\Working\Brother_Education\Preparatory_Stage_Maths-4_(31-10-2023)\Open_Files\Chap-11
\\January 6, 2024 4:14 PM Bharat Arora P-6 Reader _________________________ Date: ___________________74
3. A polygon has 6 equal sides. Each side of it is 4 cm in length. Find its perimeter.
4. The perimeter of a triangle whose two of its sides are of equal length which is
15 cm and the length of third side is 18 cm.
5. Find the perimeter of a rectangle whose length is 48 cm and breadth is 32 cm.
6. Find the perimeter of a square whose side is 7 cm.
AreA
Riya and Siya are participating in a drawing competition. Both have a drawing sheet
and also both of them want to check that whose sheet has more coverage area for
drawing.
Sheet 1 Sheet 2
To know which sheet has more coverage area they put square grid to measure the
surfaces of the sheets as shown below.
1 sq. 1 sq. 1 sq. 1 sq.
unit unit unit unit
1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq.
unit unit unit unit unit unit unit unit unit unit unit
1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq.
unit unit unit unit unit unit unit unit unit unit unit
1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq.
unit unit unit unit unit unit unit unit unit unit unit
1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq. 1 sq.
unit unit unit unit unit unit unit unit unit unit unit
28 square units 1 sq. 1 sq. 1 sq. 1 sq.
unit unit unit unit
24 square units
Clearly, sheet 1 has enclosed by 28 unit squares and sheet 2 has enclosed 24 unit
squares.
Since, sheet 1 has enclosed by more unit squares than sheet 2, so, sheet 1 has larger
surface than sheet 2 for drawing.
Thus, we can say that sheet 1 has more area then sheet 2.
208 Mathematics-4

