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Each edge length of a rectangular solid is a prime number. If the volume of the rectangular solid is 385 cubic units, what is the total surface area, in square units, of the rectangular solid?

 May 16, 2020
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385  =  5 x 7 x 11

So, two sides will be              5 x 7    =  35    x 2  =  ...

another two sides will be       5 x 11  =  55    x 2  =  ...

and the last two sides will be 7 x 11  =  77    x 2  =  ...

 

You'll need to finish the multiplying and adding the answers together ...

 May 17, 2020

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