Lol could someone explain to me the answer and how they got the answer i'm very confused about it

I'm assuming the deck is the shaded area.

To find the area of the deck, find the area of the large circle and subtract the area of the small circle from it:

A of large circle: R = (4.2/2) + 1.7 = 3.8; area: 3.8^2 * pi is about 45.3.

A of small circle: r = 4.2/2 = 2.1; area: 2.1^2 * pi is about 13.8

Now, subtract:

45.3 - 13.8 = 31.5 meters squared

  the correct choice is marked

step-by-step explanation:

the first two graphs show multiple turning points. the last graphs matches the description in every detail.

i do not know the answer

step-by-step explanation: