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With a 72cm long iron wire, it can be welded into a rectangular teaching aid with a length of 8cm, a width of () cm and a height of 4cm
Because there are four in length, width and height
72 △ 4 = 18 (CM) is the sum of the three
Width = 18-8-4 = 6 (CM)
A piece of iron wire is welded into a cube frame with an edge length of 8 cm. If this piece of iron wire is welded into a cuboid frame with a length of 10 cm and a width of 7 cm, how high should it be
12*8=96
（96-10*4-7*4）/4=7
The height is 7
How much is a 52cm iron wire, 6cm long, 4cm wide and 4cm high
3cm
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