【Haichuan Teahouse】Brain-Training Series: Think First, Then Solve Problems
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As shown in the figure, there are two squares of different sizes; the smaller square is inside the larger one. The difference in their areas is 56. Find the area of the shaded region in the figure.
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It’s one method; there’s another as well. For two integers whose square difference is 56, this method can be used to determine the sizes of the two squares
It’s actually half of the area difference. 28
This post was last edited by Yang Qing on 2021-7-26 at 12:03. This approach is relatively easy to find. ;There’s no need to calculate the side lengths at all~
I agree with the 6th and 7th floors; isn’t it just half of the area difference, which is 28?