whipcream<3
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
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ChmE
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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?
whipcream<3
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ok can you explain me better :(
Aperogalics
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@whipcream<3 let me help you do you know the volume of cylinder?????
whipcream<3
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mhmmm no? im lost sorry o.o
Aperogalics
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voume of any regular body is base* area
now what about base here..........means what type of figure it is square circle.???
Aperogalics
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@whipcream<3 ???????
whipcream<3
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ok im getting there?
whipcream<3
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I know what is the formula of the circumference of the cylindrical pipe is C=2 x pi x radius
whipcream<3
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so the radius of the 2nd cylindrical pipe is? 10?
Aperogalics
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@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:)
whipcream<3
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this is the formula for the 2 _similar_ cylindrical pipes V = pi x r^2 x h?
Aperogalics
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yup i m sry i just wrote it wrong:(
whipcream<3
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its ok :)
whipcream<3
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so now?
Aperogalics
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now u got what ChmE has written?????????
whipcream<3
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yes ^.^
hba
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The link i gave is pretty helpful @whipcream<3
whipcream<3
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oh yeah thank you @hba but im trying to learn it .
Aperogalics
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byeeeeeeeeeeeeeeeeeeeeeeee:)
whipcream<3
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Yes. So would the answer be 4?
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yup:)
whipcream<3
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thanks!;)