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After running for so long, do you know how many meters a lap of the playground

# After running for so long, do you know how many meters a lap of the playground

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[Abstract]:
Generally speaking, the innermost circle of the standard playground is 400 meters; Lap 2:407.04m; Third lap 414.70m; Lap 4 422.37m; Fifth lap 430.03 m; Lap 6 437.70m; Lap 7 445.37m; The outermost circ
Generally speaking, the innermost circle of the standard playground is 400 meters; Lap 2:407.04m; Third lap 414.70m; Lap 4 422.37m; Fifth lap 430.03 m; Lap 6 437.70m; Lap 7 445.37m; The outermost circle is 453.03 meters.
The calculated radius of one lane is 36.30 meters, the calculated line length of one lane and one curve is 114.04 meters, and the calculated line length of two curves is 228.08 meters. The length of one straight section is 85.96 meters, the length of two straight sections is 171.92 meters, and the length of one lane and one lap is 400 meters.
The international association of athletics federations (iaaf) manual stipulates that the standard semi-circle track is 400 meters long and consists of two straight tracks and two curves. At present, international and domestic track and field competitions usually use the following specifications of track and field.
Track and field with an inner protruding radius of 36 meters
The calculated radius of one lane is 36.30 meters, the calculated line length of one lane and one curve is 114.04 meters, and the calculated line length of two curves is 228.08 meters. The length of one straight section is 85.96 meters, the length of two straight sections is 171.92 meters, and the length of one lane and one lap is 400 meters. Such as Beijing workers stadium, liaoning anshan stadium, Shanghai hunan stadium.
The track and field with the designed radius of 37.898 meters
The calculated radius of one lane is 38.198 meters, the calculated line length of one lane and one curve is 120 meters, and the calculated line length of two curves is 240 meters. One straight section is 80 meters, two straight sections are 160 meters long, and the length of the calculation line is 400 meters. Such as Beijing national Olympic sports center track and field, shenyang sports center track and field, the 24th Olympic Games in South Korea Seoul track and field.
(3) track and field with an inner protruding radius of 36.50 meters
The calculated radius of one lane is 36.80 meters, the calculated line length of one lane and one curve is 115.61 meters, and the calculated line length of two curves is 231.22 meters. One straight section is 84.39 meters, two straight sections are 168.78 meters long, and the length of one lane and one circle is 400 meters. Such as dalian stadium, guangzhou Olympic track and field, changsha he long stadium, the 23rd Olympic Games Los Angeles track and field.