Question

A cylinder labeled X has a height of 18 inches and a radius of 21 inches. Another cylinder labeled Y has height of 90 inches and radius of 105 inches.

The volume of cylinder Y is _______ times the volume of cylinder X
@Hero

Answer 1

@dpaInc

Answer 2

I guess the note taking techniques didn't work out for you

Answer 3

I know the answer but I am not sure

Answer 4

Hint: Apply the formula for Volume of a Cylinder

Answer 5

is it 5 times bigger?

Answer 6

Did you apply the formula, or are you guessing?

Answer 7

I applied the formula

Answer 8

am i right?

Answer 9

@Calcmathlete

Answer 10

I think you were guessing rather than using the formula

Answer 11

let me redo, then

Answer 12

2nd Hint: \[\frac{\text{Volume of Y}}{\text{Volume of X}}\]

Answer 13

v=pi*r^2*h
v=3.14*21^2*18
v=24925.32

Answer 14

\[\frac{\pi (105)^2 90}{\pi (21)^2 18}\]

Answer 15

Simplify that

Answer 16

v=pi*r^2*h
v=3.14*105^2*90
v=3115665

Answer 17

=125 times

Answer 18

There we go

Answer 19

so its really 125 times bigger?

Answer 20

I know this comes as a surprise to you, but yes

Answer 21

ok got it, I could have used the ratio formula as well! thanx so much!

Answer 22

thanx so much @Calcmathlete

Answer 23

I thought I was the one who helped you

Answer 24

God I love you @Hero