The height of right circular cylinder P is twice the height of right circular
cylinder Q. The radis of the cylinders are of equal length. What number
times the volume of cylinder Q is equal to the volume of cylinder P?

Respuesta :

2 times the volume of cylinder Q is equal to the volume of cylinder P

Solution:

The volume of right circular cylinder is given as:

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

Where "r" is the radius and "h" is the height of cylinder

The height of right circular cylinder P is twice the height of right circular  cylinder Q

Let "h" be the height of cylinder p and "H" be the height of cylinder Q

Height of cylinder P = 2 (height of right circular  cylinder Q)

h = 2H ---- eqn 1

The radius of the cylinders are of equal length

Let "r" be the radius of cylinder P and cylinder Q

Volume of cylinder Q:

[tex]V_Q = \pi r^2H[/tex]

Volume of cylinder P:

[tex]V_P = \pi r^2h[/tex]

Substitute eqn 1

[tex]V_P = \pi r^2 (2H)\\\\V_P = 2 \pi r^2 H[/tex]

Therefore,

[tex]V_P = 2(\pi r^2 H)\\\\V_P = 2(V_Q)[/tex]

Volume of cylinder P = 2(volume of cylinder Q)

There 2 times the volume of cylinder Q is equal to the volume of cylinder P