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I dont know how to work this out

 Jan 23, 2019
 #1
avatar+103790 
+1

Volume between cylinder and sphere =

 

pi * r^2 * h  -  (4/3)pi * radius^3 =

 

pi [ 3^2 * 6  -  (4/3)*3^3 ] =

 

pi [ 54 - 36 ]  = 

 

18 pi     cm^3

 

 

Surface area of sphere =   4 pi* radius^2  =  4 * pi * 3^2  =    36 pi   cm^2

 

Surface area   of cone = pi * radius * l    =  pi * 3x * l  =  3pi * l

 

So

 

36 pi  =  3x * pi * l

 

l  =  36pi / [ 3x * pi ]   =   12 / x  cm

 

 

 

cool cool cool

 Jan 23, 2019
 #2
avatar+404 
0

Volume for cylinder- 169.646

Volume for sphere- 113.097

 

169.646-113.097= 56.549

 

I don't know if I am correct but I think this is how you do it.

 Jan 23, 2019
 #3
avatar+404 
0

Oh wait! My answer is not in terms of pi. cryingangrysurprise. Silly me. My anwer isn't correct don't listen to me.

 Jan 23, 2019

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