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Notice that the dimension of the
microwave ovens you compared was 1.6 cu. ft. The
abbreviation for cubic is
"cu." and for feet is "ft."
Suppose you want a very large microwave
to fit a small turkey. You need the unit to be at least 1.5 ft high, 2
ft deep, and 2 ft wide. How many cubic feet would you have?
Following are some
questions posed by people on the Internet. Can you answer them?
I need to build a coal
bin that will hold 40 cubic feet. How do I figure out what size box I
need to build?
Funny Answer: Wouldn't it be a whole lot
simpler just to call up the coal company, order 40 cubic feet of coal,
have it dumped on your lawn or in your driveway (or maybe the parking
lot for your apartment building) get a whole bunch of lumber and plywood
and nails and a hammer and saw, and just make a box big enough to put
all the coal into? If it's not big enough to hold all the coal, then you
add on a little bit more vertically, and if the box is too big, then you
take most of the coal out, cut the box down, and make it fit. Sheesh -
the idea of using complicated math when you can do it so easily by hand.
Serious Answer: If you build it as a
"rectangular solid" (the most reasonable shape) with length
(l), width (w), and height (h), then the volume is given by l*w*h (the
sign * = times or X). In your case, you want l*w*h= 40 cubic feet.
[So select a size to the length and width and what's left will be the
height.] If the length is 3 feet and the the width 3 feet, how high
would it have to be?]
3 X3 =9. Divide 40 by nine to find out what's left. You have
approximately 4.5 feet left for the height.
I have a box that is 13 x
24 x 15.5. How do I figure out the cubic feet it holds?
Multiply the three numbers together!