A triangle garden with sides of \(10 \ m\), \(8 \ m\) and \(6 \ m\) is constructed in a school. The students intend to adorn the inside with flowers and the outside with lights.
Based on the given information, solve the following questions
1. Find the area of the garden using Heron's formula. (in \(m^2\))
2. Find the perimeter of the garden to estimate the length of lights needed.
3. If each flower occupies \(0.2 \ m^2\), find how many flowers can be planted.
4. The school decides to increase each side by \(2\) times for a larger version; find the new area. (in \(m^2\))