 | Peter Nicholson - 1809 - 426 Seiten
...f. i ii PROBLEM III. To find the area of a triangle, whose three sides only are given. From the half sum of the three sides, subtract each side severally;...remainders together, and the square root of the product will be the area required. EXAMPLE I. Rcquireth the area of a triangle ABC, whose three sides AB, BC,... | |
 | Thomas Keith - 1817 - 306 Seiten
...three sides together, and take half that sum ; subtract each side separately from the half sum, then multiply the half sum and the three remainders together, and the square root of the last product will give the area I. Example. * Demonstration. The truth of this rule is obvious, because... | |
 | Peter Nicholson - 1825 - 1046 Seiten
...52 Ofi2.5 Prob. 3. To find the area of a triangle, whose three sides only are given. From the half sum of the three sides, subtract each side severally...remainders together, and the square root of the product will be the area required. Едг. Requireth the area of a triangle ABC, whose three »ides AB BC,... | |
 | Ireland commissioners of nat. educ - 1834 - 370 Seiten
...to find its orea. RULE I. From, half the sum of the three sides subtract each side separately, then multiply the half sum and the three remainders together, and the square root of the last product will be the area of the triangle.* height gives the area of a rectangular parallelogram,... | |
 | John Hind - 1837 - 584 Seiten
...- \/s (s — «)(« — b) (s — c) From half the sum of the sides, subtract each side separately: multiply the half sum and the three remainders together, and the square root of the product will be the area. Ex. 4. Required the area of a triangle whose sides are \2a* +262-c2, \A a2 + 2 c2... | |
 | Commissioners of National Education in Ireland - 1837 - 284 Seiten
...to find its area. RULE I. From half the sum of the three sides subtract each side separately, then multiply the half sum and the three remainders together, and the square root of the last product will be the area of the triangle.* RULE II. Divide the difference between the squares... | |
 | Frederick Augustus Griffiths - 1839 - 348 Seiten
...half the product will be the area. To find the area of a triangle whose three sides are given.—From half the sum of the three sides, subtract each side...remainders together, and the square root of the product will be the area required. Two sides of a right angled triangle being given to find the third side.—When... | |
 | Frederick Augustus Griffiths - 1840 - 436 Seiten
....?i__ =140 Square yards. Area required. To find the Area of a Triangle, whose three Sides are given. From half the sum of the three sides, subtract each...remainders together, and the square root of the product will be the Area required. Example. — Required the Area of a Triangle, whose sides are 50, 40, and... | |
 | 1847 - 190 Seiten
...su53-25 XT7S I When only the three sides of a triangle can be given, to find the artaRule — Prom half the sum of the three sides subtract each side...and the square root of the product is equal the area requiredRequired the area of a triangle, whose three sides are respectively 50, 40, and 30 feet —... | |
 | Peter Nicholson, Joseph Gwilt - 1848 - 750 Seiten
...PROBLEM III. PLATE 50. To find the area of a triangle whose three sides only are given. From the half sum of the three sides subtract each side severally;...remainders together, and the square root of the product will be the area required. EXAMPLE I. Required the area of a triangle ABC, whose three sides AB, вс,... | |
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From half the sum of the three sides subtract each side ; multiply the half sum and the three remainders together, and the square root of the product will be the area required. 
