数学学习乐园讨论与解答(31―40)
32
1641512
33
34
1cm3382cm2cm
3cm271cm27×633cm3×69
3cm4
6R2B2Y2
3R3B2Y1
3R3B1Y2
3R2B3Y1
3R1B3Y2
3R2B1Y3
3R1B2Y3
1R3B3 B3Y3 Y3R3()
RBY23
35
AaBbCc琛ㄧず3
35
3abca3ABCaA
513
3abcaAA(bcA)ABCAaBbCcADE3ADE
36
AB40m
37
8
3×34×21
5×14×23×3345122
12123
3940
()180
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