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If all three dimensions are tripled, then which of the following statements about its surface area will be true?

 

 Mar 7, 2021
 #1
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 2 lw +  2  ld   + 2 wd = area

 

Now triple l   w   and  d

 

2 * 3l 3w   + 2 * 3l 3d + 2* 3w 3d

9 * 2 lw   + 9 * 2ld +  9* 2wd     = new area      this is NINE tiems greater than original   9:1

 Mar 7, 2021

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