Question

Find the approximate perimeter of the track:

Answer 1

366 feet

Step-by-step explanation:

The two semicircles have a diameter of 40 feet.

`\begin{gathered} \text{Radius}=(40)/(2) \\ =20\text{ feet} \end{gathered}`

First, find the perimeter of the two semicircles:

`\begin{gathered} P=2((2\pi r)/(2))=2\pi r \\ =2*(22)/(7)*20 \\ =125.71\; ft \end{gathered}`

Therefore, the approximate perimeter of the track is:

`\begin{gathered} P=125.71+120+120 \\ =365.71 \\ \approx366\; ft \end{gathered}`

The approximate perimeter of the track is 366 feet.