. Mathematics, compiled from the best authors and intended to be the text-book of the course of private lectures on these sciences in the University at Cambridge [microform]. 91315840 Answer 20 MATHEMATICS. 2. Require the content of a pentagonal frustrum, whoseheight is 5 feet, each side of the base 1 foot 6 inches, andeach side of the less end 6 inches. ft. in. 1 6 1 6 9 0 1 6 2 3 0=2*25 0 6 0 6 3=25. 1*720477= tabular multiplier,2*25 = square of E D. 860238534409543440954 3«87107325 = area of E DB. 1*720477 = tabular multiplier.•25 = square of e d. 86023853440954 •43011925 = area of edb* 3-8
. Mathematics, compiled from the best authors and intended to be the text-book of the course of private lectures on these sciences in the University at Cambridge [microform]. 91315840 Answer 20 MATHEMATICS. 2. Require the content of a pentagonal frustrum, whoseheight is 5 feet, each side of the base 1 foot 6 inches, andeach side of the less end 6 inches. ft. in. 1 6 1 6 9 0 1 6 2 3 0=2*25 0 6 0 6 3=25. 1*720477= tabular multiplier,2*25 = square of E D. 860238534409543440954 3«87107325 = area of E DB. 1*720477 = tabular multiplier.•25 = square of e d. 86023853440954 •43011925 = area of edb* 3-871073430119 348396573871073387107311613219015484292 MENSURATION OF SOLIDS. 21 22 2 i665022047607(l-2903571 3-871073 , -430119 44 5*591549 2499 22502241 258033 9220477409 2580655 1479576* 1290325 2580707 7 1892510718064949 2580714 860238 5-591549 1-6666=| of height 33549294335492943354929433549294•5591549 93188755634 Answer. 3. What is the solidity of the frustum of a cone, the alti-tude being 25, the circumference at the greater end being 20, and at the less end 10 ? Ans. 464205, 4. How many solid feet are in a piece of timber, whosebases are squares, each side of the greater end being 15 inch-es, and each side of the less end 6 inches ; also the length, or perpendicular altitude, is 24 feet ? Ans. 19|. W MATHEMATICS. 5. To find the content of the frustum of a cone, the alti-tude being 1
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