1 Answer

DanZimmerman · Answer 1 · 2022-04-12T08:58:29+0000

Answer:

The perimeter of the track is of 317 meters.

Explanation:

Perimeter:

The perimeter of a figure is the sum of all its dimensions.

In this question:

The track is composed by two straights of 80m, and two half circles with a diameter of 50m.

Perimeter of a circle:

The perimeter of a circle with diameter d is of:

$P = \pi d$

Track:

Two half circles, each with a diameter of 50m, plus two straight lines of 80m. So

$P = (2\pi)/(2)(50) + 2*80) = 50\pi + 160 = 50*3.14 + 160 = 317$

The perimeter of the track is of 317 meters.

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