Question

Jake has two similar cylindrical pipes. The radius of the first cylindrical pipe is 5 cm. The circumference of the second cylindrical pipe is 20π cm.

The volume of the second cylindrical pipe is how many times greater than the volume of the first cylindrical pipe?

A) 8

B) 5

C)3

D)4

Answer 1

C = 2 pi r
20 pi = 2 pi r
10 = r of 2nd pipe

V = pi r^2 h
V = pi 100 h
and
V = pi 25 h

If the heights are the same. How many times greater in pipe 2?

Answer 2

ok can you explain me better :(

Answer 3

@whipcream<3 let me help you do you know the volume of cylinder?????

Answer 4

mhmmm no? im lost sorry o.o

Answer 5

voume of any regular body is base* area
now what about base here..........means what type of figure it is square circle.???

Answer 6

@whipcream<3 ???????

Answer 7

ok im getting there?

Answer 8

I know what is the formula of the circumference of the cylindrical pipe is C=2 x pi x radius

Answer 9

so the radius of the 2nd cylindrical pipe is? 10?

Answer 10

@whipcream<3 yup:)
so volume is=2x pi x radius x height
volume of first cylinder=2 x pi x 5cm x height
yes radius is 10:)

Answer 11

http://openstudy.com/study#/updates/4fd62985e4b04bec7f1734d6

Answer 12

this is the formula for the 2 _similar_ cylindrical pipes V = pi x r^2 x h?

Answer 13

yup i m sry i just wrote it wrong:(

Answer 14

its ok :)

Answer 15

so now?

Answer 16

now u got what ChmE has written?????????

Answer 17

yes ^.^

Answer 18

The link i gave is pretty helpful @whipcream<3

Answer 19

oh yeah thank you @hba but im trying to learn it .

Answer 20

byeeeeeeeeeeeeeeeeeeeeeeee:)

Answer 21

Yes. So would the answer be 4?

Answer 22

yup:)

Answer 23

thanks!;)