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Mathematics 13 Online
OpenStudy (anonymous):

A ball of diameter 20 cm fits exactly inside a cylindrical container, as shown below. A spherical ball fits exactly inside a cylinder so that all its sides touch the sides of the cylinder The maximum volume of liquid which can be poured into the cylindrical container when empty is ________ cm3.

OpenStudy (anonymous):

@amistre64 @mathslover

OpenStudy (anonymous):

@ganeshie8

OpenStudy (anonymous):

\[V = \pi r ^{2}h\] V= Volume of a cylinder r=radius of the cylinder h=height of the cylinder

OpenStudy (anikhalder):

@Muddingirl First find volume of cylinder and then volume of spherical ball...Then tell us what you will you do next..@kausarsalley has already told us the formula for the volume of cylinder

OpenStudy (anonymous):

Im sorry guys i don't know how...sorry

OpenStudy (anonymous):

since the sphere fits exactly into the cylinder, the diameter of the sphere is equal to the diameter of the cylinder....so therefore the radius of the cylinder would be half o of the diameter.....and if you look carefully, you would realise the diameter of the sphere (if you view its diameter vertically) is equal to the height of the cylinder......

OpenStudy (anikhalder):

No problem.. @kausarsalley is explaining great..just keep following..:)

OpenStudy (anonymous):

OK, @kausarsalley would the diameter be 20?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

ok...i got something

OpenStudy (anonymous):

so the radius would be 10 right

OpenStudy (anonymous):

@kausarsalley

OpenStudy (anonymous):

yh that is right!

OpenStudy (anonymous):

so you can now place your values in the formula and find the volume! :)

OpenStudy (anonymous):

so it'd be: \[V=\pi 10^220\]

OpenStudy (anonymous):

@kausarsalley

OpenStudy (anonymous):

yh! you got it..

OpenStudy (anonymous):

ok. i will work it out and tell you what i got! Thanks @kausarsalley

OpenStudy (anonymous):

sure! and you are welcome...

OpenStudy (anonymous):

ok i think i did something really wrong cause i got 636.94? @kausarsalley

OpenStudy (anonymous):

yh...try it again

OpenStudy (anonymous):

it got worse...6280? @kausarsalley sorry

OpenStudy (anonymous):

if you want to leave your answer to 3 sig. figs. then what you got is right! the real answer is 6283.18....

OpenStudy (anonymous):

OHH that makes sense!! THANKS SO MUCH!!! @kausarsalley

OpenStudy (anonymous):

YOU ARE WELCOME!!!! :)

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