There is a figure, the upper left corner is a small square, the big square in the lower left corner of the small square, known as two squares There is a figure, the upper left corner is a small square, and the large square is in the lower left corner of the small square. It is known that the area of the overlapping part of the two squares is equal to 1 / 9 of the area of the large square and 1 / 4 of the area of the small square. The ratio of the area of the large square to the area of the small square is calculated

There is a figure, the upper left corner is a small square, the big square in the lower left corner of the small square, known as two squares There is a figure, the upper left corner is a small square, and the large square is in the lower left corner of the small square. It is known that the area of the overlapping part of the two squares is equal to 1 / 9 of the area of the large square and 1 / 4 of the area of the small square. The ratio of the area of the large square to the area of the small square is calculated

Let the overlapping area be a
Then the large square area: overlapping area = 9:1
Small square area: overlapping area = 4:1
So large square area: small square area = (large square area / overlapping area) / (small square area / overlapping area) = 9:4