Question

James calculated the height of a cylinder that has a volume of 324pi cubic inches and a radius of 12 inches. His work is shown below.

Answer 1

For this case we have by definition that the volume of a cylinder is given by:

$V = \pi * r ^ 2 * h$

Where:

r: It's the radio

h: It's the height

We have as data that:

$V = 324 \pi\\r = 12$

Substituting:

$324 \pi = \pi * (12) ^ 2 * h$

We cleared h:

$324 \pi = \pi * 144 * h\\324 = 144 * h\\h = \frac {324} {144}\\h = 2.25$

Thus, the height of the cylinder is 2.25 inches.

Answer:

$h = 2.25$

Answer 2

Answer:

the anser is d

Step-by-step explanation: