A hollow garden roller, 63cm wide with a girth of 440 cm, is made of 4 cm thick iron. Find the volume of the iron.

Explanation

To find the volume of the iron in the hollow garden roller, we will follow these steps:

### Step 1: Understand the dimensions of the roller
- The width (height) of the roller is given as 63 cm.
- The girth (circumference) of the roller is given as 440 cm.
- The thickness of the iron is given as 4 cm.

### Step 2: Calculate the outer radius of the roller
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