To calculate the volume of a rectangular pyramid, the formula is:
\[ V = \frac{1}{3} \times \text{base area} \times \text{height} \]
First, we need to calculate the base area of the rectangular base. The base dimensions are given as 15 m by 20 m.
\[ \text{Base area} = 15 , \text{m} \times 20 , \text{m} = 300 , \text{m}^2 \]
The height of the pyramid (the tower) is given as 80 m.
Now we can substitute these values into the volume formula:
\[ V = \frac{1}{3} \times 300 , \text{m}^2 \times 80 , \text{m} \]
Calculating that:
\[ V = \frac{1}{3} \times 24000 , \text{m}^3 = 8000 , \text{m}^3 \]
Thus, the volume of the tower is 8,000 m³.
The correct answer is A) 8,000 m³.