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Which of the following functions gives the length of the base edge, a(v), of a right square pyramid that is 8 inches tall as a function of its volume,

v, in cubic inches?
A. a(v) = square root of 3/8v
B. a(v) = square root of 8v/3
C. a(v) = square root of 3v/8
D. a(v) = square root of 8/3v

1 Answer

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Final answer:

The correct function for the length of the base edge of a right square pyramid with a height of 8 inches as a function of its volume is C. a(v) = square root of (3v/8).

Step-by-step explanation:

To find the function that gives the length of the base edge, a(v), of a right square pyramid as a function of its volume, v, with a given height of 8 inches, let's start with the formula for the volume of a pyramid, V = (1/3)Abh, where V is the volume, Ab is the base area, and h is the height. For a square base, Ab = a2, so the volume formula becomes V = (1/3)a2h. Given that h = 8 inches, we can rewrite this as v = (1/3)a2(8) or v = (8/3)a2. To solve for a, we need to 'undo' the square on a by taking the square root and rearrange the equation to isolate a: a(v) = √(3v/8).

Therefore, the correct answer is C. a(v) = √(3v/8).

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