To find the volume of a rectangular pyramid, you can use the formula:
\[ \text{Volume} = \frac{1}{3} \times \text{Base Area} \times \text{Height} \]
First, calculate the base area of the rectangle:
\[ \text{Base Area} = \text{length} \times \text{width} = 15 , \text{m} \times 20 , \text{m} = 300 , \text{m}^2 \]
Next, we need to multiply the base area by the height of the pyramid, which is 80 m:
\[ \text{Height} = 80 , \text{m} \]
Now, substitute these values into the volume formula:
\[ \text{Volume} = \frac{1}{3} \times 300 , \text{m}^2 \times 80 , \text{m} = \frac{1}{3} \times 24000 , \text{m}^3 = 8000 , \text{m}^3 \]
Therefore, the volume of the tower is \( \text{8000 m}^3 \).
The correct response is:
8,000 m³