A tank measures 4m long and 3m wide. If the volume of this tank is 72m³, find the height of the tank.

To find the height of the tank, we can use the formula for the volume of a rectangular prism:

Volume = length x width x height

Given:
Length = 4m
Width = 3m
Volume = 72m³

Substitute the given values into the formula:

72 = 4 x 3 x height

Simplify:

72 = 12 x height

Divide both sides by 12:

height = 72 / 12
height = 6

Therefore, the height of the tank is 6 meters.

The formula for the volume of a rectangular tank is:

```
V = l × w × h
```

where:

- V is the volume in cubic meters
- l is the length in meters
- w is the width in meters
- h is the height in meters

We are given that the volume is 72m³, the length is 4m and the width is 3m. We can rearrange the formula to solve for the height:

```
h = V / (l × w)
```

Substituting the given values, we get:

```
h = 72m³ / (4m × 3m) = 6m
```

Therefore, the height of the tank is 6 meters.