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Function: driver

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Function: initiateCache

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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Function: model

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Function: model

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Function: getFloatingMyInfo

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Line: 559
Function: get_footer

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once

수학동아 - 폴리매스
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함께 풀고 싶은 문제
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[창의 퍼즐] 왜?
집돌이 페렐만 2020.01.03 01:55 조회 681
문제 푼 사람 0명
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

깡통, 통조림 통, 캔 등은 보통 원기둥모양이다. 왜일까?

 

반면 우유깍은 사각기둥모양이다. 왜일까?

이 문제 어떠셨나요?

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    부분해결
    꾀돌이 Lv.5 2020.01.03 06:26 비밀댓글
    비밀 댓글이 등록 되었습니다.
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  •  
    꾀돌이 Lv.5 2020.01.04 04:05

    원기둥 모양과 사각기둥 모양의 부피가 같을 때, 원기둥 모양이 재료가 덜 듭니다. 그렇게 만든 이유는 메탈이 비싸서기도 하고, 또 효율성이 뛰어나기도 합니다.

     

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