Answers

(1)BC,CD,GH,GFの4本

(2)面ABFEと面DCGH→36×2=72
面BCGFと面ADHE→54×2=104
面ABCDと面EFGH→54×2=104
72+104+104=280㎠

ここまででごめんなさい

芋けんぴ🍠

ありがとうございます!

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