In this question, we are asked to find the value of X in the figure III. There aren`t specific conditions or equations provided, hence, one has to infer the context based on the question and additional information.

Option 1 suggests X equals 4. This is the correct answer as per the provided response, likely derived from the context or calculations based on information provided earlier.

Option 2 suggests X equals 16. While possible in other circumstances, this is not the correct answer in this case.

Option 3 is suggesting X equals 25. Like the previous options, without knowing the exact context, in general, this would be an incorrect option here.

Option 4 suggests X equals 36. Again, this would also be incorrect given the provided answer.

Without more information or context, it`s challenging to explain in-depth why 4 is the correct answer and the others are not. Regardless, it`s important to understand that the value of X depends on the given conditions or problem statement which are not provided here.