A running track in the shape of an oval is shown. The ends of the track form semicircles.
it shows a circle that the length is 140m and up and down on the inside is 68m
The total length of the oval running track can be calculated by adding the length of the straight sections and the two semicircles at each end.
The length of the straight sections is equal to the circumference of the circle, which is 2πr = 2π(140/2) = 140π.
The length of each semicircle is equal to half the circumference of the circle, which is πr = π(140/2) = 70π.
Therefore, the total length of the oval running track is 140π + 70π + 70π = 280π = 879.65 meters.