Guys what is the standard hight of a water closet if the diameter is 100mm

The standard height of a water closet (toilet bowl) from the finished floor to the top of the rim is typically between $380 \text{ mm}$ to $430 \text{ mm}$ ($15 \text{ inches}$ to $17 \text{ inches}$). For accessible or comfort height toilets, this can be slightly higher, around $430 \text{ mm}$ to $480 \text{ mm}$ ($17 \text{ inches}$ to $19 \text{ inches}$).

The $100 \text{ mm}$ diameter refers to the typical size of the waste pipe connected to the water closet, not its height.

Therefore, a common standard height is:

$$\text{Approximately } 400 \text{ mm}$$