The ratio of the height of two similar cylinders is 2: 1. what is the ratio of their volumes?

v1 : v2 = 1 : 2

step-by-step explanation:

points to remember

volume of cylinder v =   πr²h

where r - radius of cylinder and

h - height of cylinder

to find the ratio of volumes

it is given that,   the height of two similar cylinders is 2: 1.

let height of first cylinder = h then the height of second cylinder = 2h

volume of first cylinder   v1 =   πr²h

volume of second cylinder   v2 =   πr² * 2h = 2πr²h

ratio of volimes = v1/v2 = πr²h/2πr²h = 1/2

v1 : v2 = 1 : 2

y < -3

step-by-step explanation:

-3y - 2 > 7

-3y -2 + 2 > 7+2

-3y > 9

-3y/-3 < 9/-3   (change the inequality sign when multiplying or dividing by a negative number)

y < -3