Step-by-step explanation:
5x-16 = 3 (10+x)
=> x= 23
AB = AC
18 = 3x + 6
-6 -6
18-6 = 3x
12/3 = 3x/3
4 = x
When slicing a cube it is impossible to create a circular cross section and an octagonal cross section. The reason for this is, a cube only has 6 sides and so no matter how many ways you slice it you can't get a shape with more sides than that.
That would be 5/8
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