The base diameter and the height of a cone are both equal to
X units.
Which expression represents the volume of the cone, in
cubic units?
Piex2
2piex3
o 1/3piex?
o 1/12piex

Respuesta :

Answer:

For this case we know that the diameter and height of a cone are both equal. That means:

[tex] h = D=x[/tex]

With [tex] D =2r[/tex] with r the radius. The volume of a cone is given by:

[tex] V =\frac{1}{3} \pi r^2 h [/tex]

And for this case we know that h =x and [tex] x =2r[/tex] so then [tex] r= \frac{x}{2}[/tex]

And replacing we got:

[tex]V= \frac{1}{3} (\frac{x}{2})^2 (x)= \frac{1}{12} x^3[/tex]

And the best option would be:

1/12pix^3

Step-by-step explanation:

For this case we know that the diameter and height of a cone are both equal. That means:

[tex] h = D=x[/tex]

With [tex] D =2r[/tex] with r the radius. The volume of a cone is given by:

[tex] V =\frac{1}{3} \pi r^2 h [/tex]

And for this case we know that h =x and [tex] x =2r[/tex] so then [tex] r= \frac{x}{2}[/tex]

And replacing we got:

[tex]V= \frac{1}{3} (\frac{x}{2})^2 (x)= \frac{1}{12} x^3[/tex]

And the best option would be:

1/12pix^3