I believe C/12=pi which means the answer would be B.
a discrete graph (I had to look this one up)
The two parabolas intersect for

and so the base of each solid is the set

The side length of each cross section that coincides with B is equal to the vertical distance between the two parabolas,
. But since -2 ≤ x ≤ 2, this reduces to
.
a. Square cross sections will contribute a volume of

where ∆x is the thickness of the section. Then the volume would be

where we take advantage of symmetry in the first line.
b. For a semicircle, the side length we found earlier corresponds to diameter. Each semicircular cross section will contribute a volume of

We end up with the same integral as before except for the leading constant:

Using the result of part (a), the volume is

c. An equilateral triangle with side length s has area √3/4 s², hence the volume of a given section is

and using the result of part (a) again, the volume is

June has 10 cupcakes.She wants to break it into halfs.How many pieces did of cupcakes dose she have?
plz press the thank you button ..?
Answer: 
<u>Simplify both sides of the equation</u>
<u></u>
<u></u>
<u></u>
<u>Subtract 2 from both sides</u>
<u></u>
<u></u>
<u></u>
<u>Divide both sides by 2</u>
<u></u>
<u></u>