The volume \( V \) of a pyramid can be calculated using the formula:
\[ V = \frac{1}{3} \times \text{Base Area} \times \text{Height} \]
Given that the base area is \( 18 , \text{ft}^2 \) and the height is \( 29 , \text{ft} \), we can substitute these values into the formula:
\[ V = \frac{1}{3} \times 18 , \text{ft}^2 \times 29 , \text{ft} \]
Calculating the volume:
\[ V = \frac{1}{3} \times 18 \times 29 \]
First, calculate \( 18 \times 29 \):
\[ 18 \times 29 = 522 \]
Now, divide by 3:
\[ V = \frac{522}{3} = 174 \]
Thus, the volume of the pyramid is:
\[ \boxed{174} , \text{ft}^3 \]