In the 250m runway and 200m 400m race, there is a formula for calculating the extension number of each track and an additional score with graphics, and each track is1.22m wide.

First of all, your playground must be a standard semi-circular track and field. Whether it is 200 meters, 250 meters, 300 meters, 350 meters or 400 meters, the following formula can be used, but the premise is that it must be a standard semi-circular track and field.

Take runway width 1.22m as an example.

200m first lane length =? Pi(？ 3. 14 159265? )×? (bending radius +0.3)+ number of straights.

What is the extension length of other lanes? =? Pi(？ 3. 14 159265? )×? 〔? Bending radius+? 1.22? ×(N- 1)+？ 0.20m？ 〕×? (N？ Is the number of lanes)

The length of the first lane is 400 meters =? Pi(？ 3. 14 159265? )×? (bending radius +0.3)×? 3。

What is the extension length of other lanes? =? Pi(？ 3. 14 159265? )×? 〔? Bending radius+? 1.22? ×(N- 1)+？ 0.20m？ 〳(N？ Is it the number of lanes) × three

A 250-meter runway. You should run three corners at 400 meters and one corner at 200 meters.