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Surface area

 

 Apr 23, 2020
 #1
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I will calculate the volume with the bottom box + upper box. 30*8*12 is the dimensions of the bottom box, and 11*(30-9-9)*12 = 2880+1584 = 4464

 Apr 23, 2020
 #2
avatar+61 
+1

Sorry, that was volume. The surface area is 30*8*2 + 12*8*2 + 30*12 + 9*12*2 + 11*12*2 + 12*12.

 Apr 23, 2020

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