How many cubic inches are there of foam packing?

Question

You mail a gift box that is 18 inches by 8 inches by 12 inches. You want to put a larger box around it and surround it with foam packing. The larger box is 20 inches by 12 inches by 15 inches. How many cubic inches are there for foam packing?

Answer 1

Hi Jenna, the cubic inches needed will be the difference between: 20 * 12 * 15 and 18 * 8 * 12.

 

20 * 12 * 15 = 3600 cubic inches.

 

18 * 8 * 12 = 1728 cubic inches.

 

The difference, 3600 - 1728, or 1872 cubic inches.

 

You will have 1872 cubic inches of foam packing.

 

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