To calculate the volume \( V \) of a square-based pyramid, you can use the formula:
\[ V = \frac{1}{3} \times \text{Base Area} \times \text{Height} \]
Given that the area of the base is \( 12 \) square units and the height is \( 15 \) units, we can substitute these values into the formula:
\[ V = \frac{1}{3} \times 12 \times 15 \]
Calculating this step-by-step:
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Multiply the base area by the height: \[ 12 \times 15 = 180 \]
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Now, multiply by \( \frac{1}{3} \): \[ V = \frac{180}{3} = 60 \]
Thus, the volume of the pyramid is \( 60 \) cubic units.
Therefore, the correct response is 60 cubic units.