Please help with explanation

B

Step-by-step explanation:

The formula for a area of the first semi circle is

where r is the radius

Since 4 is the diameter, 2 is the radius

plug it in

so the area of the first circle is 2

now let find the second circle

Since the semi circle is twice the area of AB the diameter is 8 so the radius is 4.

Put it in the equation.

Now let find the third circle

Since it is twice the size of the second circle, the diameter is 16 and the radius is 8.

Now let add the area of the semi circle

the bottom of the spinner is not flat.

step-by-step explanation:

domain is all the x values included in the

0 ≤ x ≤ 2

range is all the y values of the graph

-2 ≤ y ≤ 2

***keep in mind that there are different ways to show domain and range

hope this !

~just a girl in love with shawn mendes