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Examples of Perimeter of a Sector

Here are a few more examples of perimeter of a sector.

Calculate the perimeter of the following sectors, correct to 1 decimal place.

 

Example 1 : Perimeter of a sector  =  2r  +  theta/360~*~2 pi r Examples of perimeter of a sector_1

=  2 x 12  +  180/360x 2 x 3.14 x 12

=  24 + 37.68

=  61.7 mm (to 1 decimal place)

 

Example 2 : Perimeter of a sector  =  2r  +  theta/360~*~2 pi r  Examples of perimeter of a sector_2

=  2 x 27  +  15/360 x 2 x 3.14 x 27

=  54 + 7.06

=  61.1 cm (to 1 decimal place)

 

Example 3 : Perimeter of a sector  =  2r  +  theta/360~*~2 pi r  Examples of perimeter of a sector_3

=  2 x 17  +  140/360 x 2 x 3.14 x 17

=  34 + 41.52

=  75.5 m (to 1 decimal place)

 

Example 4 : Perimeter of a sector  =  2r  +  theta/360~*~2 pi r  Examples of perimeter of a sector_4

=  2 x 32  +  222/360 x 2 x 3.14 x 32

=  64 + 123.93

=  187.9 mm (to 1 decimal place)

 

Example 5 : Perimeter of a sector  =  2r  +  theta/360~*~2 pi r  Examples of perimeter of a sector_5

=  2 x 9  +  45/360 x 2 x 3.14 x 9

=  18 + 7.07

=  25.1 m (to 1 decimal place)