The length is
(18 centimeters) minus (the width)
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Perimeter of rectangle = 2 x (Length + Width) = 2 x (L + 18) or = (2L + 36) centimetres.
It is: 12 units in length
Length = 9 Width = 9 Your rectangle is a square.
Perimeter is the distance around the rectangle ... OR (2 X Length) + ( 2 X Width) SO 44 -- (2 X 4) = 36 which is 2 X the Length. 36/2 = 18, which is your answer.
It is: 2*(36+23) = 118 cm