A cube of `9cm` edge is immersed completely in a rectangular vessel containing water. If the dimensions of the base are `15 c ma n d12 c mdot` Find the rise in water level in the vessel.

Explanation

To solve the problem of finding the rise in water level in a rectangular vessel when a cube is immersed in it, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the dimensions of the cube**:
The edge length of the cube is given as 9 cm.

2. **Calculate the volume of the cube**:
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