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" MULTIPLY the longest diameter, or axis, by the shortest ; then multiply the product by the decimal -7854, for the area. As appears from cor. 2, theor. 3, of the Ellipse, in the Conic Sections. Ex. 1. Required the area of an ellipse whose two axes are... "
The Artillerists̓ Manual, and British Soldiers̓ Compendium - Page 322
by Frederick Augustus Griffiths - 1859 - 354 pages
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A Course of Mathematics in Two Volumes for the Use of Academies as Well as ...

Charles Hutton - Mathematics - 1807 - 464 pages
...17'4,20-6, 14% IQ'5,20'1, {J4'4; what is the area? Ans. 1550'64. PROBLEM 1 , To. find the Area of an Ellisis or Oval. MULTIPLY the longest diameter, or axis, by the shortest ; then multiply the product by the decimal -7854, fot the area. As appears from cor. 2, theor. 3, of the Ellipse, in the Conic Sections....
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A Course of Mathematics: In Three Volumes : Composed for the Use of the ...

Charles Hutton - Mathematics - 1811 - 494 pages
...equidistant places 174, 20'6, 14% 16-5, 20'1, i!4-4; what is the area ? Ans. 1550-64. PROBLEM XIV. To find the Area of an Ellipsis or Oval. MULTIPLY...axis, by the shortest ; then multiply the product by the decimal '7854, for the area. As appears from cor. 2, theor. 3, of the Ellipse, in the Conic Sections....
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A Course of Mathematics: In Two Volumes : for the Use of Academies ..., Volume 1

Charles Hutton - Mathematics - 1816 - 610 pages
...what is tbc area ? Ans. 155O-64. • PROBLEM XIV. To find the Area of an Eltisit or Oval. "Mui-TiPtY the longest diameter, or axis, by the shortest ; then multiply the product by the decimal -785* for ihe area. As appears from cor. 2, theor. 3, of the Ellipse, m the Conic Sections....
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A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - Mathematics - 1822 - 616 pages
...-. 16-5, SO-I, 24-4; what is the area ? Ana. 1650-64. PROBLEM XIV. To find the Area of an Ell i sis or Oval. MULTIPLY the longest diameter, or axis, by the shortest ; then multiply the product by the decimal -7854, for the area. As appears from cor. 2, theor. 3, of the Ellipse, in the Conic Sections....
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A Course of Mathematics: For the Use of Academies as Well as ..., Volume 1

Charles Hutton - Mathematics - 1831 - 632 pages
...equidistant places 17-4, 20-6, 14-2, 16-5, 20-1, 21-4 ; what is the area ? Ans. 1550-64. rHOBLEH XIV. Tn find the Area of an Ellipsis or Oval. MULTIPLY the...axis, by the shortest ; then multiply the product by the decimal -7854, for the area. As appears from cor. 2, Iheor. 3, of the Ellipse, in the Conic Sections....
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A Course of Mathematics: For the Use of Academies as Well as ..., Volume 1

Charles Hutton - Mathematics - 1831 - 660 pages
...equidistant places 17-4, 20-6, 14-2, 16-5, 20-1, 24-4 ; what is the area ? Ans. 1550-64. PROBLEM XIV. Toßnd the Area of an Ellipsis or OvaL MULTIPLY the longest...axis, by the shortest ; then multiply the product by the decimal -7854, for the area. As appears from cor. 2, theor. 3, of the Ellipse, in the Conic Sections....
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The artillerist's manual, and compendium of infantry exercise

Frederick Augustus Griffiths - 1839 - 348 pages
...trapezoids, and add them all together for the whole area. To find the area of an ellisis or oval.—Multiply the longest diameter or axis by the shortest, then multiply the product by -7854 for the area. To find the area of a parabola, or its segment.—Multiply the base by the perpendicular height and...
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The artillerist's manual, and compendium of infantry exercise

Frederick Augustus Griffiths - 1840 - 436 pages
...diameter being 50 inches. 50 X 50 X '7854 „_, , {square inches. __ yoi'io j 2 C The Area required. To find the Area of an Ellipsis, or Oval, Multiply...diameters are 25 inches, and 18 inches. 25 X 18 X -7854 == 353-43 S. Inches. Area required. To find the Area of a Parabola, or its Segment. Multiply the base...
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The Artillerists̓ Manual, and British Soldiers̓ Compendium

Frederick Augustus Griffiths - Artillery drill and tactics - 1854 - 406 pages
...-7854 for the area. Example.— Required the area of the ellipse, whose diameters are 25 inches, and 18 inches. 25 x 18 x -7854 = 353-43 square inches. Area...required. To find the area of a parabola, or its segment. height, and take twobase is 20x12 = 240 | of 240 = 1 60 square feet. Area required. MENSURATION OF...
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The artillerist's manual, and compendium of infantry exercise

Frederick Augustus Griffiths - 1868 - 542 pages
...for the area. Example. — Required the area of the ellipse, whose diameters are 25 inches, and 18 inches. 25 X 18 X -7854 = 353-43 square inches. Area required. To ßnd the area of a parabola, or its segment. Multiply the base by the perpendicular height, and take...
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