A cylinder has a radius of 10cm and a height of 9cm. A cone has a radius of 10cm and a height of 9 cm. Show that the volume of the cylinder is three times the volume of the cone.

Respuesta :

Answer:

The answer in the procedure

Step-by-step explanation:

step 1

Find the volume of the cylinder

The volume of the cylinder is equal to

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

we have

[tex]r=10\ cm[/tex]

[tex]h=9\ cm[/tex]

substitute

[tex]V=\pi (10)^{2}(9)=900\pi\ cm^{2}[/tex]  

step 2

Find the volume of the cone

The volume of the cone is equal to

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

we have

[tex]r=10\ cm[/tex]

[tex]h=9\ cm[/tex]

substitute

[tex]V=(1/3)\pi (10)^{2}(9)=300\pi\ cm^{2}[/tex]  

therefore

we have

[tex]Vcylinder=900\pi\ cm^{2}[/tex]  

[tex]Vcone=300\pi\ cm^{2}[/tex]  

so

[tex]Vcylinder=3Vcone[/tex]