Infinitely many.
Select any number, L, such that 12 < L < 24. Let W = 24 - L. Then a rectangle with sides of length L cm and width W cm will have a perimeter of 48 cm. And since the choice of L was arbitrary, there are infinitely many possible values of L and thence infnitely many rectangles.
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There is an infinite number that can have that perimeter
thare is only 1 differint rectangles
Depends what you are drawing on.
There are three possibilities.. 1 x 12... 2 x 6 & 3 x 4
I don't understand why there are so many questions about rectangles' perimeter. You just add the length and the width and double your answer....