Question

The track has 6 lanes that are each 1 meter in width.

Answer 1

Answer:

$P=436\ m$

Step-by-step explanation:

we know that

An Olympic 400 meter track is made up of two straight sides, each measuring 84.39 meters in length, and two semi-circular curves with a radius of 36.5 meters as pictured below

The outer perimeter of the track is equal to :

The sum of the two straightaway sections of the track plus the two semi-circular sections (can be joined to form a circle)

Note: The radius of the outer circle is equal to the inner radius plus the number of lanes multiplied by one meter each

so

$P=2(84.39)+2(3.14) (36.5+6)$

$.P=168.78+266.9=435.68\ m$

Round  to the nearest meter.

$P=436\ m$