3. How many square meters are enclosed in
the track?

For the rectangular shape we have:

And the total area would be:

Replacing we got:

Step-by-step explanation:

For this case using the figure attached we can separate the total area in 3 parts.

For this case and represent the area for a semicircle and the A2 represent the area for a rectangular figure.

We can find the individual areas like this:

For the rectangular shape we have:

And the total area would be:

Replacing we got:

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

no because after the troops were pulled many blacks were killed by hangings lynchings and other cruel ways which in a way interrupted the reconstruction of the south and differed from the way abraham lincoln had an idea of reconstruction