Question

How to do this question plz answer me step by step plzz plz plz plz plz plz plz plz ​

Answer 1

Explanation:

To solve for the perimeter, we first look at the rectangle in the middle. the length is 50m, and there are two sides to it, so: 50 * 2 = 100m for the top and bottom of the track.

For the circle, we can see the diameter is 30m. To solve for the circumference, we need to use the formula 2πr.

15 * 2π ≈ 94.2477796077

We add that to 100m and get:

194.2477796077

Answer 2

288.4m

Explanation:

This track is split into a rectangle and two semi-circles.

We can find the length of the semi-circles by finding its circumference with the formula
`2\pi r`.

`2\cdot3.14\cdot30\\188.4`

However this is half a circle, so:

`188.4/2=94.2`.

There are two semi-circles.

`94.2\cdot2=188.4`

Since there are two legs of 50m each, we add 100 to 188.4

`188.4+100=288.4`m

Hope this helped!