Respuesta :

fussellk

Answer:

20

Step-by-step explanation:

you know a square has sides that measure the same, so what two numbers when multiplied together get 400....20

or the square root of 400 = 20

dannychen000

Answer:

20m

Remember to put the unit !!! :)

Step-by-step explanation:

The formula to find the area of a square is s^2 or s x s

In this case, a number times the same number is 400

20 x 20 = 400 so the side is 20m

Hope this helps!!!

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Thank You!!!

:)

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