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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1720 Excerpt: ...To make a square, two, three, four, or any number of times bigger than another square. Square the fide thereof to find the content, then doubled treble or quadruple the content as you have occasion, and the square root thereof extracted sliews the side of the square desired. So having the Diameter, Semy-Diameter, or the circumference of a Circle to make another 2, 3, or 4 times bigger than another Circle; square it, then double, treble, or quadruple the number, and extract the square root thereof 5 so you shall have the Diameter, Semy-Diameter, or circumference of a Circle that shall be 2, 3, or 4 times bigger than the other. Twelfthly, The side of a square being given to find the Diagonal. Double the square of the side, and the square root thereof is the Diagonal. II. Of Superficies of Solid Bodies, THus far for the finding the superficial content of plain superficies: Now for the finding the superficial content of the superficies of solid Bodies. First, Of Round Pillars. The Rule. Multiply the length by the circumference, and the product will be your desire. Example. y.1 0 Example... A Eainter hath painted a pillar that is 5 foot 10 inches in circumference, and 12 foot 8 inches long. Question, how many yards square is the painting? foot inches. Note, I divide the feet 12 08 by 9, because 9 square 5: 10 feet are in a square!. yard.Or you may work K 4 by the yard, as before + directed. 4--02--8 yrds. 8---02 06--Facit. Secondly, Of Square Pillars. TheRtAe.' Add the 4 breadths together, and multiply the Total by the length. Thirdly, Of Regular Poligons. Add all the breadths together, (be they of as many sides as they will, ) and multiply the total by the length, and the jproduct gives your desire. Fourthly, Of Cones. Multiply 4-the circumference at the B...

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