A water tower has a height of 25 meters and a width of 16 meters. What is the volume of the water tower? Use 3.14 for pi.

1. 5,024 cubic meters
2. 20,096 cubic meters
3. 15,700 cubic meters
4. 7,850 cubic meters

1 answer

To calculate the volume of a cylindrical water tower, we can use the formula for the volume of a cylinder:

\[ V = \pi r^2 h \]

where:

  • \(V\) is the volume,
  • \(\pi\) is a constant (approximately 3.14),
  • \(r\) is the radius of the cylinder,
  • \(h\) is the height of the cylinder.

Given:

  • The width of the water tower is 16 meters, which means the diameter is 16 meters. Therefore, the radius \(r\) is:

\[ r = \frac{diameter}{2} = \frac{16}{2} = 8 \text{ meters} \]

  • The height \(h\) of the water tower is 25 meters.

Now, we can substitute the values into the volume formula:

\[ V = 3.14 \times (8)^2 \times 25 \]

Calculating \( (8)^2 \):

\[ (8)^2 = 64 \]

Now, substituting back:

\[ V = 3.14 \times 64 \times 25 \]

Calculating \( 64 \times 25 \):

\[ 64 \times 25 = 1600 \]

Now we need to calculate \( 3.14 \times 1600 \):

\[ V = 3.14 \times 1600 = 5024 \]

Thus, the volume of the water tower is:

\[ \boxed{5,024} \text{ cubic meters} \]

The correct answer is 1. 5,024 cubic meters.