- #1

scientist

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- Thread starter scientist
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- #1

scientist

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- #2

EnumaElish

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Output in gal/min = cylinder volume (in gals.) * number of strokes per min.

- #3

Ouabache

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As a followup to *EnumaElish'*s reply.. Are you in good shape finding the volume of the cylinder?http://www.mathleague.com/help/geometry/3space.htm#cylinder [Broken]

The question states the diameter, all you need is the length (which is implied in the problem description)

The question states the diameter, all you need is the length (which is implied in the problem description)

Last edited by a moderator:

- #4

scientist

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-----------------------------------------------------------------------EnumaElish said:Output in gal/min = cylinder volume (in gals.) * number of strokes per min.

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Can yourself EnumaElish check my answer?

v = pi * r^2 * h

= (3.140) * (3^2) * (8)

= 226 cubic inches in each stroke

Total = 226 cubic inches x 200 strokes = 45,200 cubic inches

convert cubic inches to gallons ; 1 gallon = 231 cubic inches

45,200 cubic inches

------------------

231 cubic inches

= 196 gallons

Is this correct? Please post.

- #5

EnumaElish

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It looks right to me, with the minor edit that it's 196 gals.scientist said:= 196 gallons

Is this correct? Please post.

Last edited:

- #6

Fermat

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I get the same and that's the correct conversion factor from US liquid gallons to cubic inches.

- #7

quark

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Correct, provided 200 is the no.of discharge strokes per minute, otherwise half the flowrate.

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