Given:
The running track shown in the diagram has 2 straight sides. Both ends of the track are semi-circles, or half circles.
The distance of one lap around the track =
two times the length of the rectangle in the middle + the length of the two semi-circles
Note: the length of the two semi-circles = circumference of the circle
The circumference will be calculated using the following formula:
[tex]circumference=2\pi r[/tex]
substitute r = 30/2 = 15, and π = 3.14
[tex]circumference=2*3.14*15=94.25[/tex]
So, the distance of one lap around the track =
[tex]100+100+94.25=294.25[/tex]
So, the answer will be:
the distance of one lap around the track = 294.25 m
