A.
The volume of a cylinder is given by:
[tex]V=\pi r^2h[/tex]
Where:
r = radius = 2in
h = height = 7in
So:
[tex]\begin{gathered} V=\pi(2^2)7 \\ V=28\pi \\ Answer: \\ 28\pi_{\text{ }}in^3 \end{gathered}[/tex]
Part B:
[tex]\begin{gathered} V=(\frac{22}{7})(2^2)(7) \\ V=88_{\text{ }} \\ Answer: \\ 88_{\text{ }}in^3 \end{gathered}[/tex]
Part C:
[tex]\begin{gathered} V=(3.14)(2^2)(7) \\ V=87.92 \\ Answer: \\ 87.92_{\text{ }}in^3 \end{gathered}[/tex]
Part D:
π is an irrational number, so the only way to express it with 100% of accuracy is simply write π.
Therefore:
Exact:
Part A
Approximate:
Part B
Part C
