The first 87× 2+2× 3.14× (36+1.2× 0) = 400.

The second 87× 2+2× 3.14× (36+1.2×1) ≈ 408.

The third 87× 2+2× 3.14× (36+1.2× 2) = 415.

The fourth 87× 2+2× 3.14× (36+1.2× 3) ≈ 423 meters.

Fifth, 87× 2+2× 3.14× (36+1.2× 4) ≈ 430m.

Sixth 87× 2+2× 3.14× (36+1.2× 5) ≈ 438 meters.

Seventh 87× 2+2× 3.14× (36+1.2× 6) ≈ 445 meters.

Eighth 87× 2+2× 3.14× (36+1.2× 7) ≈ 453 meters.

The introduction of Changzhi Park is as follows:

Changzhi Sports Park, with a total construction area of more than 50,000 square meters, is an eco-smart city park integrating physical fitness, urban leisure, ecological landscape and underground parking. The project is divided into two parts: above ground and underground. The above-ground buildings include a cultural and sports center, a three-story multi-functional fitness building, a comprehensive stadium area, an extreme competitive area and a circular fitness trail. Underground buildings include sports fitness venues, sports culture exhibition centers, sports venues and nearly a thousand parking spaces. Fully meet the sports and fitness needs of the masses and become the first choice for everyone's fitness. The city sports park, which is "brushing the screen" in the circle of friends, has also been well received by a large number of citizens' fans.