Answer:
18 inches
Step-by-step explanation:
none of the other side lengths could reach to the side length of the 12 inch side.
The answer is: [B]: " g(x) = −x(x − 1)(x + 2)(x <span>− 5) " .
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The answer must be

since the triangular pyramid has 4 faces and each has an area of 30

we should multiply that by 4 , so :