if the perimeter of a rectangle with 13 cm length is 40 cm then the breadth is​

2 thoughts on “if the perimeter of a rectangle with 13 cm length is 40 cm then the breadth is​”

1. Answer:

   Perimetre = 7 cm

   Step-by-step explanation:

   Perimetre of rectangle = 2x(l+b)

   40 cm = 2x(13+b)

   40/2 = 13+b

   20 = 13+b

   b = 20-13

   b = 7 cm

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2. [tex]\rm{Perimeter\:of\:Rectangle = 2\times (Length + Breadth)}[/tex]

   [tex]\longrightarrow\rm{40\:cm = 2\times (13\:cm + Breadth)}\longrightarrow\rm{40\:cm = (2\times 13\:cm) + (2\times Breadth)}[/tex]

   [tex]\longrightarrow\rm{40\:cm = 26\:cm + (2\times Breadth)}\longrightarrow\rm{ 2\times Breadth = 40\:cm – 26\:cm}[/tex]

   [tex]\longrightarrow\rm{2\times Breadth = 14\:cm}\longrightarrow\rm{Breadth = 14/2\:cm = 7\:cm}[/tex]

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