To apply frosting to a cake, a baker twists a plastic bag containing the frosting into a cone shape with a diameter of 4 in and a length of 6 in. How many cubic inches of frosting is in the bag? Use 3.14 for pi. Enter your answer in the box as a decimal rounded to the nearest tenth.

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Answer

Cub inches of frosting in the bag to the nearest tenth:

25.1

Explanation

To find the volume of the frosting, we are using the formula for the volume of a cone:

Volume of the cone:

[tex]V=\pi r^2\frac{h}{3}[/tex]

where

[tex]V[/tex] is the volume of the cone

[tex]r[/tex] is the radius  

[tex]h[/tex] is the height

Since the radius is half the diameter, [tex]r=\frac{4in}{2} =2in[/tex]. The lenght of the bag is the height of the cone, so [tex]h=6in[/tex]. Let's replace the values in our formula to find [tex]V[/tex]:

[tex]V=(3.14)(2in)^2(\frac{6in}{3} )[/tex]

[tex]V=(3.14)(4in^2)(2in)[/tex]

[tex]V=25.12in^3[/tex]

And rounded to the nearest tenth:

[tex]V=25.1in^3[/tex]


Answer: 25.5

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