• Math

  algebra basic

  Posted by Ananya Gupta on December 15, 2023 at 10:35 pm

  A rectangle has a length of L units and a width of 5 units. If the perimeter is 22 units, write an equation to find the length of the rectangle.

  • This discussion was modified 1 year, 3 months ago by  Ananya Gupta.

  Asha replied 1 year, 2 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Asha

  Member

  December 16, 2023 at 12:58 am

  Perimeter of a rectangle = 2(length + breadth)

  –>P = 2(l+b).

  Now we know , that

  P= 22 units

  length, l = L units

  width(also known as breadth), b = 5 units

  So substituting that in the equation: P = 2(l+b),

  22=2(L + 5)

  –> 22 = 2*L + 2*5

  –> 22 = 2*L + 10

  –> 22 – 10 = 2*L

  –> 12 = 2L

  –> 2L = 12

  –> L = 12/2

  –> L = 6 units

  So the length of the rectangle is 6 units.

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