Respuesta :

24

Add 9 and 3 twice since you need to cover the whole shape.

Answer:

24x1x1*1*1*1

Step-by-step explanation:

that should be the answer as l+b+l+b as perimeter is only the length of the boundary.

you can also say it as 2(l+b) as if you multiply something by to it simply means adding it by it once. l is length 9, b is breadth 3 btw

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