Explanation:

To find the height of a conical tent, we use the formula for the volume of a cone:

$$\text{Volume}=\frac{1}{3}\times \text{Base Area}\times \text{Height}$$

- The volume is given as 924 cubic meters.

- The base area is given as 154 square meters.

- Plug the values into the formula:

$$924=\frac{1}{3}\times 154\times \text{Height}$$

- Simplify to find the height:

$$\text{Height}=\frac{924\times 3}{154}=\frac{2772}{154}=18\text{meters}$$

?? Correct Answer: Option 4 - 18 m