Answer:
Option D is correct.
![Volume=(8)/(27)\ cubic\ yard](https://img.qammunity.org/2020/formulas/mathematics/middle-school/iykhv07n25vyg4b9dtfkyvmg14yiuq9jo9.png)
Explanation:
Let V be the volume of hay in each stack
Given:
Length of the each stack is
![(2)/(3)\ yard](https://img.qammunity.org/2020/formulas/mathematics/middle-school/5bnf6vxp8xz01rwn9rtsmanxis3of6msir.png)
And Jay stores hay in cubic stacks on his farm.
The volume of the cone is.
Now, we substitute value of length of stack in above equation.
![V=((2)/(3))^(3)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/bgwrgstf622lsk4wjxcn9ug0m0r4lox07r.png)
![V=(2^(3))/(3^(3))](https://img.qammunity.org/2020/formulas/mathematics/middle-school/f6tfsj1d9i4hqx0pwus867pu5gbqvjgv9x.png)
![V=(8)/(27)\ cubic\ yard](https://img.qammunity.org/2020/formulas/mathematics/middle-school/o85hxv4uzkvcamangwcgtimdpi2l0kzrf5.png)
Therefore, the volume of hay in each stack is
![V=(8)/(27)\ cubic\ yard](https://img.qammunity.org/2020/formulas/mathematics/middle-school/o85hxv4uzkvcamangwcgtimdpi2l0kzrf5.png)