Question

What is the sphere's volume?

Answer 1

`972\pi~ \text{in}^3`

Explanation:

`\text{Volume of sphere} = \frac 43 \pi r^3 \\\\\\~~~~~~~~~~~~~~~~~~~~~~~~=\frac 43 \pi \left( \frac d{2} \right)^3\\\\\\~~~~~~~~~~~~~~~~~~~~~~~~=\frac 43 \pi \cdot \left((18)/(2)\right)^3\\\\\\~~~~~~~~~~~~~~~~~~~~~~~~=\frac{4\pi}3 \cdot 9^3 \\\\\\~~~~~~~~~~~~~~~~~~~~~~~~=972\pi~ \text{in}^3`