One side of a square is reduced by 20% and the other side is increased by 2m to get a rectangle whose area is equal to that of the original square How many square meters is the original square?

One side of a square is reduced by 20% and the other side is increased by 2m to get a rectangle whose area is equal to that of the original square How many square meters is the original square?

According to the fact that one side of a square is reduced by 20%, we know that the length of one side of a rectangle is 1-20% of that of the original square. We can find out how many parts are increased by taking the length of the original square as the unit "1". Then we can find out the side length of a square according to the meaning of fractional division. Because the area of a square is equal to that of a rectangle, we can get the answer,
=54-1,
=1/4,
2 △ 1 / 4 = 8 (m),
8 × 8 = 64 (M2);
So the answer is: 64