Solve problems involving perimeters of composite 2-D shapes

Let's practise

 

1. Mei Eng  made a bookmark using a rectangle and a triangle. Find the perimeter of the bookmark.

 2. Can you find the perimeter  of the road signboard to your school? It was a composite shape of rectangle and a triangle.

                                       

3. Find the perimeter of this letter

      "T ". 

 

********************************************************************************************************************                                    1. (5 + 5 + 17 + 4 +17 ) cm = 48cm

 
          2. ( 42 + 3 + 12 + 12 + 3 + 42 + 8 ) cm = 122 cm 

  3. ( 10 + 2 + 4 + 12 + 2 + 12 + 4 + 2 ) cm = 48 cm

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                    You can work out some exercises from the website given: 

                  Quiz engine for perimeter                                                          

Treat yourself by making a bookmark.