Answer:

1)

2)

Step-by-step explanation:

Formula of area of square =

We are given that the side of the square is 2.1 m

So, area of square =

                               =

Now we are given an another square of side 3.5 m

So, area of square  =

                               =

Hence the area of square whose side is 2.1 m is 4.41 square meter and area of square whose side is 3.5 m is 12.25 square meter.