# A little greenhouse, on paper

A useful AI answer should be easy to keep, share, and print.

## Keep the calculation

For a circular greenhouse with radius $r=2.5\,\mathrm{m}$:

$$A=\pi r^2\approx19.63\,\mathrm{m}^2$$

| What to plan | Starting point |
| :--- | ---: |
| Floor area | 19.63 m² |
| Raised beds | 4 |
| Walking path | 0.8 m |

## Keep the next steps

```mermaid
flowchart LR
 A[Measure the space] --> B[Plan the beds]
 B --> C[Print the checklist]
```

- [x] Measure the available space
- [ ] Choose beds and plants
- [ ] Keep a printed copy by the workbench

## Keep the details

```python
from math import pi
area = pi * 2.5 ** 2
print(f"Floor area: {area:.2f} m²")
```

Water is $\ce{H2O}$; carbon dioxide is $\ce{CO2}$.[^note]

[^note]: This is a formatting demonstration, not a horticultural specification.