econ_phd_2009 Posted October 7, 2008 Share Posted October 7, 2008 A big cube of side 6 cm is formed by putting together 216 small but identical cubes each of side 1 cm. now, if the corner cubes are removed, what is the change in total surface area of the big cube? Source: from rezbipuls's collection. Quote Link to comment Share on other sites More sharing options...
moodaeng Posted October 7, 2008 Share Posted October 7, 2008 Same as before Quote Link to comment Share on other sites More sharing options...
saifgre Posted October 7, 2008 Share Posted October 7, 2008 Removing corner cube will loose area of 3 unit. however, Removing that cube will open 3 new unit area. thats why the resultant 'surface area' will not be change. Becareful, this question doesn't ask about changing volume. Quote Link to comment Share on other sites More sharing options...
econ_phd_2009 Posted October 7, 2008 Author Share Posted October 7, 2008 ok. i got it. thanks Quote Link to comment Share on other sites More sharing options...
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