Diketahui sebuah kubus panjang rusuknya&nbsp;<img align="middle" alt="undefined" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»6«/mn»«mi»cm«/mi»«/mrow»«/mstyle»«/math»" height="11" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -1px;" width="29" />. Akan dicari&nbsp;luas permukaan kubus.

<img align="middle" alt="begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell Lp subscript kubus end cell equals cell 6 cross times open parentheses rusuk cross times rusuk close parentheses end cell row blank equals cell 6 cross times open parentheses 6 cross times 6 close parentheses end cell row blank equals cell 216 cm cubed end cell end table end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mtable columnspacing=¨0px¨ columnalign=¨right center left¨»«mtr»«mtd»«msub»«mi»Lp«/mi»«mi»kubus«/mi»«/msub»«/mtd»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»6«/mn»«mo»§#215;«/mo»«mfenced»«mrow»«mi»rusuk«/mi»«mo»§#215;«/mo»«mi»rusuk«/mi»«/mrow»«/mfenced»«/mtd»«/mtr»«mtr»«mtd/»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»6«/mn»«mo»§#215;«/mo»«mfenced»«mrow»«mn»6«/mn»«mo»§#215;«/mo»«mn»6«/mn»«/mrow»«/mfenced»«/mtd»«/mtr»«mtr»«mtd/»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»216«/mn»«msup»«mi»cm«/mi»«mn»3«/mn»«/msup»«/mtd»«/mtr»«/mtable»«/mstyle»«/math»" height="59" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -30px;" width="186" />&nbsp; 
&nbsp;

Jadi, luas permukaan kubus tersebut adalah&nbsp;<img align="middle" alt="begin mathsize 14px style 216 cm cubed end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»216«/mn»«msup»«mi»cm«/mi»«mn»3«/mn»«/msup»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -1px;" width="53" />.

Sebuah kubus panjang rusuknya&nbsp;<img align="middle" alt="undefined" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»6«/mn»«mi»cm«/mi»«/mrow»«/mstyle»«/math»" height="11" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -1px;" width="29" />. Tentukan luas permukaan kubus.

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Sebuah kubus panjang rusuknya . Tentukan luas perm...

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