Question

A running track consists of two straight segments joined by semi-circular ends, as shown. The total perimeter of the track is 1600m.
d=191m
Jason takes 4minutes and 25 seconds to complete a single lap of the track. Calculate Jason's average speed in ms⁻¹.

Answer 1

Answer:

Radius of semi- circular track = 63 m

perimeter of 2 semi-circles = perimeter of 1 circle

perimeter of a circular track = 2πr

Perimeter of circular track = 2×22/7×63 = 2×22×9

= 44×9 = 396 m

Since, the perimeter of the total track is 1000 m

Therefore, the length of two straight lengths track = 1000-396 =604 m

Length of 1 straight length track = 604/2 = 302 m.