Contents In Gallons Of The Frustum Of A Cone 28

To find the Contents in Gallons of a Vessel, whose diameter is larger at one end than the other, such as a Bowl, Pail, Firkin, Tub, Coffee-pot, etc.

Rule

Multiply the larger diameter by the smaller, and to the product add one-third of the square of their difference, multiply by the height, and multiply that product by .0034 for Wine Gallons, and by .002785 for Beer.

Example

Required the contents of a Coffee-pot 6 inches diameter at the top, 9 inches at the bottom, and 18 inches high.

Large diameter

9

Brought up

1026

Small do.

6

•0034

54

4104

1/3 of the square

3

3078

57

3.4884 wine gallons, or nearly 3½ gallons.

Height

18

456

57

Carried up 1026

1020 multiplied by .002785 equal 2.8574 Beer Gallons.