Question

The 18pi threw me of pls help me on this

Answer 1

The circumference of a circle is given by the formula:

`C=2\pi r`

Since the circumference of this cylinder base is 18π, we can find its radius:

`\begin{gathered} 18\pi=2\pi r \\ r=(18\pi)/(2\pi)=9 \end{gathered}`

Now, in order to calculate the cylinder volume, we can use the formula:

`V=\pi r^2h`

Using r = 9, h = 30 and π = 3.14, we have:

`\begin{gathered} V=3.14\cdot9^2\cdot30 \\ V=7630.2 \end{gathered}`

So the correct option is H.