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[수학 정보] 직육면체의 겉넓이와 부피에 대한 사실
Amath 2021.06.21 04:33 조회 536
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

어떤 가로, 세로, 높이가 각각 a, b, c인 직육면체가 있을 때, 이 직육면체보다 가로, 세로, 높이가 각각 1만큼 더 긴 직육면체의 겉넓이는 이 직육면체의 겉넓이 - 6(a+b+c+2)입니다. 

 

그리고, 이 직육면체의 부피는 이 직육면체보다 가로, 세로, 높이가 각각 1만큼 더 긴 직육면체의 부피는 <이 직육면체의 부피> + (<이 직육면체보다 가로, 세로, 높이가 1만큼 더 긴 정육면체의 겉넓이> ÷ 2) - a - b - c - 2입니다. 

 

(알아보기 어려워졌네)

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