The figure below shows a water tank in the shape of a cuboid (internal dimensions).

The length of the tank is 2 meters, the width is 1.5 meters, and the height is 1 meter.

The volume of the tank can be calculated using the formula for the volume of a cuboid, which is length x width x height.

Volume = 2m x 1.5m x 1m = 3 cubic meters

Therefore, the volume of the water tank is 3 cubic meters.

[Image of a water tank in the shape of a cuboid (internal dimensions)]

Internal dimensions:

- Length: 5 m
- Width: 3 m
- Height: 2 m

Volume of the water tank:

The volume of a cuboid is given by the formula:

```
Volume = Length × Width × Height
```

Therefore, the volume of the water tank is:

```
Volume = 5 m × 3 m × 2 m = 30 cubic meters
```

Surface area of the water tank:

The surface area of a cuboid is given by the formula:

```
Surface area = 2(Length × Width + Width × Height + Height × Length)
```

Therefore, the surface area of the water tank is:

```
Surface area = 2(5 m × 3 m + 3 m × 2 m + 2 m × 5 m) = 62 square meters
```