Question

What is the approximate volume of a cone with a height of 12 in. and radius of 9 in.?

Use 3.14 to approximate pi, and rexpress your final answer to the nearest tenth.

Answer 1

`\sf~V=(1)/(3)\pi~r^2h`

Plug in what we know:


`\sf~V=(1)/(3)(3.14)~(9)^2(12)`

Simplify exponent:


`\sf~V=(1)/(3)(3.14)~(81)(12)`

Multiply:


`\sf~V=1017.36`