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# Can A and Can B are both right circular cylinders. The

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Can A and Can B are both right circular cylinders. The [#permalink]

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24 Nov 2007, 03:11
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Can A and Can B are both right circular cylinders. The radius of Can A is twice the radius of Can B, while the height of Can A is half the height of Can B. If it costs $4.00 to fill Can B with a certain brand of gasoline, how much would it cost to completely fill Can A with the same brand of gasoline? VP Joined: 08 Jun 2005 Posts: 1145 Followers: 7 Kudos [?]: 198 [0], given: 0 ### Show Tags 24 Nov 2007, 04:06 Can A volume = pi*(2r^2)*h/2 Can B volume = pi*r^2*h pi*r^2*h = 4 pi*4(r^2)*h = 16 pi*4(r^2)*h/2 = 8 ---> volume of can B the answer is (8$)

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24 Nov 2007, 09:58
bmwhype2 wrote:
Can A and Can B are both right circular cylinders. The radius of Can A is twice the radius of Can B, while the height of Can A is half the height of Can B. If it costs $4.00 to fill Can B with a certain brand of gasoline, how much would it cost to completely fill Can A with the same brand of gasoline?$8

V(B) = PI*r^2*h
V(A) = PI*4r^2*h/2 = PI*2*rh

V(A) = 2 V(B)
Re: circular cylinders   [#permalink] 24 Nov 2007, 09:58
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