Use trigonometry: (\tan(\theta) = 50 / 20).

The circumference (C = 2\pi r = 2 \pi \times 200 = 400\pi) meters.

As the new solar year begins, the small town of Luminaria is buzzing with excitement. The town council has announced an ambitious project to create a large, circular park in the center of the town. The project aims to not only provide a green oasis for the residents but also to host a variety of cultural events throughout the year.

The distance between each lantern = (400\pi / 30).

The main engineer, Ms. Aster, a skilled mathematician and resident of Luminaria, has been tasked with executing the council's vision. She decides to integrate math into the design to make the installation both beautiful and efficient.

(\theta = \arctan(50 / 20) = \arctan(2.5)).