(지구가 완벽한 구라고 가정합니다)
지구 둘레에 끈을 한바퀴 둘러서 묶은 후,
이 끈을 지구 표면에서 정확히 1m씩 들어올리려고 한다면,
끈이 얼마나 더 필요할까요?
(이때, 끈은 두께가 없다고 가정합니다.)
(풀이 필수)
좋아요
0
글쎄요
0
어려워요
0
-
해결
A PHP Error was encountered
Severity: Warning
Message: mkdir(): Permission denied
Filename: libraries/Common.php
Line Number: 202
Backtrace:
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 202
Function: mkdirFile: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 236
Function: getLatexImgFile: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view_comment_list.php
Line: 90
Function: parseLatexImgFile: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view.php
Line: 343
Function: viewFile: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
Line: 558
Function: viewFile: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once비밀 댓글이 등록 되었습니다.A PHP Error was encountered
Severity: Warning
Message: file_put_contents(/DATA/upload/polymath/latex/a3df5a2a372852e4b6ae107e4fd8dfc8.gif): failed to open stream: No such file or directory
Filename: libraries/Common.php
Line Number: 213
Backtrace:
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 213
Function: file_put_contentsFile: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 236
Function: getLatexImgFile: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view_comment_list.php
Line: 90
Function: parseLatexImgFile: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view.php
Line: 343
Function: viewFile: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
Line: 558
Function: viewFile: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once댓글 작성하기 댓글수0 -
다시 도전
