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Mathematics 19 Online
OpenStudy (openstudier777):

Answer Question 34: Attached below: Medal + Fan

OpenStudy (openstudier777):

OpenStudy (openstudier777):

Please help.

jhonyy9 (jhonyy9):

how you see the first cylinder what height has ?

OpenStudy (openstudier777):

It has a height fo 12

jhonyy9 (jhonyy9):

yes and the second what height has ?

OpenStudy (openstudier777):

9

jhonyy9 (jhonyy9):

right so you know again that these cylinders are similar - yes ?

OpenStudy (openstudier777):

yes

jhonyy9 (jhonyy9):

do you know what mean this ?

OpenStudy (openstudier777):

no. sorry

OpenStudy (openstudier777):

?

jhonyy9 (jhonyy9):

ok so than you dont know it i will tel you this mean that how you see on this posted image there are marked just the height of cylinders and you know again that are similar so from this result that these cylinders has every measures equal just these marked height are different - ok ? so from this result that has the same base too

jhonyy9 (jhonyy9):

and do you know formula of volume of a cylinder what is ?

OpenStudy (openstudier777):

v=pi*r^2*h

jhonyy9 (jhonyy9):

sorry just pir^2 what is ?

OpenStudy (openstudier777):

What do you mean

jhonyy9 (jhonyy9):

pir^2 what mean there ?

OpenStudy (openstudier777):

pir^2*h right? Pir^2= 3.14 * r^2

jhonyy9 (jhonyy9):

no so you know that pir^2*h is formula of volume of a cylinder - yes ? but separate pir^2 what mean from there ?

OpenStudy (openstudier777):

Yes

jhonyy9 (jhonyy9):

what is formula for area of a circle ?

OpenStudy (openstudier777):

Pi r ^2

jhonyy9 (jhonyy9):

exactly - so from this formula of volume of a cylinder what mean pir^2 ?

OpenStudy (openstudier777):

volume of a cylinder: area * h

jhonyy9 (jhonyy9):

area of the base because a cylinder has a base of circle - yes ?

OpenStudy (openstudier777):

yes

OpenStudy (openstudier777):

Oh I get it

OpenStudy (openstudier777):

Si wat from there?

jhonyy9 (jhonyy9):

so now you know that these cylinders has the same base bc. are similar so the ratio of these volume you get from the ratio of these marked height ok. ?

OpenStudy (openstudier777):

Oh so it would be 4:3?

jhonyy9 (jhonyy9):

why you wrote there ,,Si" are you italian ?

OpenStudy (openstudier777):

No it was an accident. lol

jhonyy9 (jhonyy9):

ok

jhonyy9 (jhonyy9):

how you get this 4/3 ?

OpenStudy (openstudier777):

The ratio of height to heigh 12:9 - 4:3

OpenStudy (openstudier777):

If that is wrong, what would the answer be

jhonyy9 (jhonyy9):

yes this is right sure just i wan be sure that you know the way how you get it so now do you understand it all ?

OpenStudy (openstudier777):

Yes I do

jhonyy9 (jhonyy9):

ok was my pleasure good luck bye bye

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