a cylinder and a cone have the same volume. the cylinder has a radius of 2 inches and a height of 3 inches. the cone has a radius of 3 inches. what is the height of the cone?

Respuesta :

2 inches
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The formula to find the volume of cylinder is

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

The radius of cylinder = 2 in

Height of the cylinder = 3 in

Substituting the values of r = 2 & h = 3

We get

Volume of cylinder

[tex] \pi2^{2} (3)= 12\pi [/tex]

The formula to find the volume of cone is

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

The radius of the cone is given as 3 inches

Substituting in the formula we get

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

But the volumes are given equal

So

[tex] 3\pi h= 12\pi [/tex]

Dividing by 3[tex] \pi [/tex] on both sides

we get

h = 4

The height of the cone is 4 inches.