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PERIMETER AND
AREA
Anuja Gupta
Roll No. 4
VII C, KV OFD, Raipur, Dehradun
A perimeter is a path that surrounds an area.
The word comes from the Greek peri (around) and meter
(measure). The term may be used either for the path or
its length - it can be thought of as the length of the
outline of a shape. The perimeter of a circular area is
called its circumference.
               6


                                  Perimeter = 6+4+6+4
                             4              = 20 units
   4



               6
Perimeter of the house is equal to the length of the fence.
Can you tell the Perimeter of these figures:
(Let each side be equal to 2 units)




         12 units               12 Units




        28 Units                 24 Units
Perimeter is used in many things such as-

To calculate the amount of wood required for a fence.




To calculate the amount of paint required to paint that fence.




To calculate the length of cloth required to make a dress.
1. Measure a,b and c.
2. Add a,b and c to get the
   Perimeter.
3. Got it ? Any questions?




              Yes Sir, got it.
Area is a quantity that expresses the extent of a
two-dimensional surface or shape, or planar lamina,
in the plane. Area can be understood as the amount of
material with a given thickness that would be necessary
to fashion a model of the shape, or the amount of paint
necessary to cover the surface with a single coat.

              7

                                 Area = 7*4
                         4            = 28 Units
Area of India is 3,287,263 km2
Area of regular shapes can be calculated by
using Formulae

Area of a square of side a =

Area of rectangle =

Area of a circle =

Area of a triangle =
Calculate the area of these figures
       4


                            5
                3                           3



                                4



                        3           1
                                        3


     R=3            2

                        3               3
                                    1
Complicated shapes may be converted to simple
Shapes, and then the area of all such shapes may
be added to get the area of the whole shape.




                     =                +
On the lighter side . . .

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Perimeter and area

  • 1. PERIMETER AND AREA Anuja Gupta Roll No. 4 VII C, KV OFD, Raipur, Dehradun
  • 2. A perimeter is a path that surrounds an area. The word comes from the Greek peri (around) and meter (measure). The term may be used either for the path or its length - it can be thought of as the length of the outline of a shape. The perimeter of a circular area is called its circumference. 6 Perimeter = 6+4+6+4 4 = 20 units 4 6
  • 3. Perimeter of the house is equal to the length of the fence.
  • 4. Can you tell the Perimeter of these figures: (Let each side be equal to 2 units) 12 units 12 Units 28 Units 24 Units
  • 5. Perimeter is used in many things such as- To calculate the amount of wood required for a fence. To calculate the amount of paint required to paint that fence. To calculate the length of cloth required to make a dress.
  • 6. 1. Measure a,b and c. 2. Add a,b and c to get the Perimeter. 3. Got it ? Any questions? Yes Sir, got it.
  • 7. Area is a quantity that expresses the extent of a two-dimensional surface or shape, or planar lamina, in the plane. Area can be understood as the amount of material with a given thickness that would be necessary to fashion a model of the shape, or the amount of paint necessary to cover the surface with a single coat. 7 Area = 7*4 4 = 28 Units
  • 8. Area of India is 3,287,263 km2
  • 9. Area of regular shapes can be calculated by using Formulae Area of a square of side a = Area of rectangle = Area of a circle = Area of a triangle =
  • 10. Calculate the area of these figures 4 5 3 3 4 3 1 3 R=3 2 3 3 1
  • 11. Complicated shapes may be converted to simple Shapes, and then the area of all such shapes may be added to get the area of the whole shape. = +
  • 12. On the lighter side . . .