Any number between 8-16
If you do 12+5=17 the other side can't be 17 because then the triangle would be flat so it's any number lower than 17.
Also, 12-5= 7. Again, 7 can't be the third side of this traingle because it would make the triangle flat. so any number higher than 7 would work.
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You were almost there, 12ft x 5ft = 60 sq ft
Two of them.
73.9583 square feet.
5ft. :/
In general when you think of a cube you think volume. Which would be 12 * 7 * 5 or 420 cubic feet. However, if you mean the area of the outer rectangles, then you need to think about each of the 6 sides. To figure out the area of each side you take the length times the width. There are 2 sides that are 12ft x 7ft - area of 74 ft each, or 148 for both There are 2 sides that are 12ft x 5ft - area of 60 ft each, or 120 for both and there are 2 that are 7ft x 5ft - area of 35 ft each, or 70 for both So the total area would be 338 square feet