SOLUTION: the dimensions o a brick are 1 in * 2 in * 8 in. how many of these bricks are needed to have a total volume of exactly 1 cubic foot?

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Question 168701: the dimensions o a brick are 1 in * 2 in * 8 in. how many of these bricks are needed to have a total volume of exactly 1 cubic foot?
Answer by jim_thompson5910(21667) About Me  (Show Source):
You can put this solution on YOUR website!
Note: we need to get ALL units to be equal (ie get everything to inches or feet)

Total Volume:

1 cubic foot = 12 inches * 12 inches * 12 inches = 1,728 cubic inches

Volume of One Brick:

1 in * 2 in * 8 in = 16 cubic inches


Now divide the total volume (1,728 cubic inches) by the volume of 1 brick (16 cubic inches)


1728%2F16=108


So you need 108 bricks to get 1 cubic foot.