Find tha perimeter of a square with area 400cm2?
Please answer

80

Step-by-step explanation:

the formula for a squares area is = A

the area is 400 so to find a side all you need to do is find the square root of 400, and that is 20

Finally multiply 20 by 4 so find the perimeter

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

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