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Sunshine447
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The small pipe has a radius of 16 feet and a height of 48 feet while the large pipe has a height of 60 feet. What is the volume of the large pipe in terms of π?
http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0806_04/image0034e847d9e.gif
 2 years ago
 2 years ago
Sunshine447 Group Title
The small pipe has a radius of 16 feet and a height of 48 feet while the large pipe has a height of 60 feet. What is the volume of the large pipe in terms of π? http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0806_04/image0034e847d9e.gif
 2 years ago
 2 years ago

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Faris_Waleed Group TitleBest ResponseYou've already chosen the best response.0
First of all you know that the formula for calculating the volume of a cylinder is: V=pi*r(square)*height
 2 years ago

Faris_Waleed Group TitleBest ResponseYou've already chosen the best response.0
OK, you have the radius and height for the small pipe and the height for the large pipe but you don't have the radius you need in order to calculate the volume, understood till here now?
 2 years ago

Faris_Waleed Group TitleBest ResponseYou've already chosen the best response.0
Did you understand ?
 2 years ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
u have to make a ratio, right?
 2 years ago

Faris_Waleed Group TitleBest ResponseYou've already chosen the best response.0
Yes like this: Height in the small pipe / Height in the large pipe = Radius in the small pipe / Radius in the large pipe
 2 years ago

Faris_Waleed Group TitleBest ResponseYou've already chosen the best response.0
Height in the small pipe = 48 cm Height in the large pipe= 60 cm Radius in the small pipe = 16 cm Radius in the large pipe= xcm Understood till here now?
 2 years ago

Faris_Waleed Group TitleBest ResponseYou've already chosen the best response.0
Now solve for x which will give you the radius of the large pipe
 2 years ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
cross multiply?
 2 years ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
okay, hold on
 2 years ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
wait... its 20
 2 years ago

Faris_Waleed Group TitleBest ResponseYou've already chosen the best response.0
Look, 16/x = 48/60 16*60*48*x 960=48x x=960/48 x=20
 2 years ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
so, then i multiply 20 by height?
 2 years ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
@Faris_Waleed
 2 years ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
@AccessDenied
 2 years ago

Faris_Waleed Group TitleBest ResponseYou've already chosen the best response.0
Yes you use the cylinder formula to calculate its volume
 2 years ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
i got 1200..... but that's not a choice...
 2 years ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
@CliffSedge
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
What is the radius of the large pipe?
 2 years ago
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