28×28-12×16-5×12/2=562
Or
276+30+56+200=562
28×28-12×16-5×12/2=562
Or
276+30+56+200=562
• 高!直接割或補成正方形再減 -萬斤油- ♂ (0 bytes) () 11/20/2023 postreply 18:11:04
• 這道題出的很巧妙。題中的數字引人聯想勾股定理。 -大醬風度- ♂ (0 bytes) () 11/21/2023 postreply 02:16:18
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