 | Harris & Brother (Philadelphia) - 1866 - 110 σελίδες
...X by one-half the perpendicular height. 3. TRIANGLE — Area from three sides given. From the half sum of the three sides subtract each side separately...three remainders together, and the square root of the product will be the area. 4. TRAPEZOID — the sum of the two parallel sides X by half the perpendicular... | |
 | Edward Thomas Stevens - 1866 - 434 σελίδες
...hypoteneuse required. To Jind the area of any triaiu]k when the three sides only are gicen. KULE : — From half the sum of the three sides subtract each side separately, then multiply the half sum and the three remainders together. The square root of the product is the... | |
 | Whiting Griswold - 1866 - 144 σελίδες
...angle, and one-half the product equals the area. To find the area of a triangle by its sides. RULE 8. From half the sum of the three sides subtract each side separately ; then multiply the half sum and the three remainders continually together, and the square root of... | |
 | A. C. Smeaton - 1867 - 314 σελίδες
...sides. RULE. Add the three sides together, and from half the sum subtract each side separately ; then multiply the half sum and the three remainders together, and the square root of the product will be the area required. Let the sides of a triangle be 30, 40, and 50 feet, respectively,... | |
 | Gerardus Beekman Docharty - 1867 - 474 σελίδες
...derive the following RULES. from half the sum of the three sides ml/tract each side separately ; then multiply the half sum and the three remainders together, and the square root of their continued product will b« the area of the triangle. Or, RULE n. Add together the logarithms... | |
 | John Groesbeck - 1867 - 226 σελίδες
...length by the breadth. To find the area of a triangle. Multiply the base by one-half the altitude. Or, From half the sum of the three sides subtract each side separately ; multiply together the half sum and the three remainders, and extract the square root of the product. To find... | |
 | John Fair Stoddard - 1888 - 480 σελίδες
...triangle. Rule. — Multiply its base by half its altitude. NOTE. — If the three sides, only, are given, From half the sum of the three sides, subtract each side separately, multiply the half sum and these remainders together, und extract the square root of the product. 1. What is the area of a triangle... | |
 | Septimus Tebay - 1868 - 168 σελίδες
...CONTINUED. IX. TO find the area of a triangle when the three sides are given. From half the sum of the sides subtract each side separately; multiply the half sum and the three remainders together, and extract the square root. Ex. 1. Find the area of a triangle whose sides are 19, 24, 34. 7So7S 375375... | |
 | Benjamin Greenleaf - 1868 - 340 σελίδες
...Ans. 12 A. 20 P. PROBLEM IX. 622. To find the area of a TRIANGLE, the three sides being given. side ; multiply the half sum and the three remainders together, and the square root of the product will be the area required. For, let ABC be a triangle whose three sides, AB, BC, AC, are given,... | |
 | John Groesbeck - 1868 - 350 σελίδες
...length by the breadth. To find the area of a triangle. Multiply the base by one-half the altitude. Or, From half the sum of the three sides subtract each side separately ; multiply together the half sum and the three remainders, and extract the square root of the product. To find... | |
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From half the sum of the three sides, subtract each side separately; multiply the half -sum and the three remainders together; the square root of the product is the area. 
