Respuesta :

krilshashrestha

Answer:

s=21

Step-by-step explanation:

given ,

area=441cm^2

length (l)=s

we know,

or,l^2=441cm^2

or,l=√441cm^2

or,l=21cm

Answer:

s=21

Step-by-step explanation:

s=square

hope this helps

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