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Answer:
288
Explanation:
Since this is a cube, all sides are equal
If you [tex]\sqrt{36}[/tex] you will get an answer of 6. This is the length of the sides of your square prism.
Now that you know your "a" value
you find your "h value, which is already given.
h= 9cm
a= 6cm
There are two faces which equal 36
36+36= 72
There are 6 faces to a prism and you know two so you have 4 left
9(6)= 54
54(4) = 216
Now you have all your numbers for surface area, so you add them up
215+72 = 288
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