Respuesta :

Answer:

20

Step-by-step explanation:

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Answer:

100 ft.

Explanation:

To find an area, you have to multiply the length/width of every side. Meaning you just have to do simple multiplication, which is:

20x4= 80

200x4= 800

100x4= 200

25x4= 100

As you can see, it is 100.