A solid iron rectangular block of dimensions 4.4 m , 2.6 m and 1 m is cast into a hollow cylindrical pipe of internal radius 30 cm and thickness 5 cm.Find the length of the pipe.

Explanation

To solve the problem, we need to find the length of the hollow cylindrical pipe into which a solid iron rectangular block is cast. We will use the concept of volume, as the volume of the rectangular block will equal the volume of the hollow cylinder.

### Step-by-Step Solution:

1. **Calculate the Volume of the Rectangular Block:**
The dimensions of the rectangular block are given as:
- Length (l) = 4.4 m
- Width (w) = 2.6 m
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