Question

Hi I need help with this question this question has four parts to a parts ABC and D

Answer 1

A.

The volume of a cylinder is given by:

`V=\pi r^2h`

Where:

r = radius = 2in

h = height = 7in

So:

`\begin{gathered} V=\pi(2^2)7 \\ V=28\pi \\ Answer: \\ 28\pi_{\text{ }}in^3 \end{gathered}`

Part B:

`\begin{gathered} V=((22)/(7))(2^2)(7) \\ V=88_{\text{ }} \\ Answer: \\ 88_{\text{ }}in^3 \end{gathered}`

Part C:

`\begin{gathered} V=(3.14)(2^2)(7) \\ V=87.92 \\ Answer: \\ 87.92_{\text{ }}in^3 \end{gathered}`

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