Question

A cone has a radius of 9 units and height of 8 units. What is its volume?

Answer 1

V-678.58

Explanation:

it is volume so it is 678.58

Answer 2

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

`V = \frac {1} {3} \pi * r ^ 2 * h`

Where:

A: It's the radio

h: It's the height

We have by the statement of the problem that:

`r = 9 \ units\\h = 8 \ units`

Substituting:

`V = \frac {1} {3} \pi * r ^2 * h\\V = \frac {1} {3} \pi * 9 ^ 2 * 8\\V = \frac {1} {3} \pi * 81 * 8\\V = \frac {1} {3} \pi * 648\\V = 216 \pi`

Answer:

`216 \pi \ units ^ 3`