Question

What is the volume of a cone with diameter 21 m and height 4 m?

Answer 1

the volume is 12,348 m

Answer 2

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

`r= (d)/(2) = (21)/(2) = 10.5`
h=4
Now plug those in to the formula.

`V= (1)/(3) (3.14) [tex] (10.5)^(2)`4[/tex]
Let's work on the multiplication first, then we will do the fraction.

`10.5^(2)` = 110.25*3.14 = 346.185 * 4 = 1384.74
So now we have
`V= (1)/(3) (1384.74) = 461.58`

Hope that helps.