A copper wire, `3` `mm` in diameter, is wound about a cylinder whose length is `12` `cm`, and diameter `10` `cm`, so as to cover the curved surface of the cylinder. Find the length and mass of the wire, assuming the density of copper to be `8. 88` `g` `p e r\ cm^3`

Explanation

To solve the problem step by step, we will first find the length of the copper wire wound around the cylinder and then calculate its mass.

### Step 1: Find the number of rounds of wire around the cylinder

1. **Given data:**
- Diameter of the wire = 3 mm
- Height of the cylinder = 12 cm

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