 | Thomas A. Rice - Accounting - 1889 - 364 pages
...Multiply three sides together. 6. To find area of triangle. — Multiply base by half the altitude. Or, from half the sum of the three sides subtract each side separately ; multiply the half sum by the three remainders, and extract square root of product. 7. To find area... | |
 | Horatio Nelson Robinson - Arithmetic - 1892 - 428 pages
...2 = 60 ; 60 - 30 = 30 ; 60 - 40 = 20 ; 60 - 50 = 10. V60x30x20xlo' = 600 sq. ft. , area. RULE. — 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.... | |
 | Horatio Nelson Robinson - Arithmetic - 1892 - 428 pages
...= 60 ; 60 - 30 = 30 ; 60 - 40 = 20; 60 - 50 = 10. \X60~x30 x 20 x 10 = 600 sq. ft., area. RULE. — 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.... | |
 | Massachusetts - Massachusetts - 1893 - 988 pages
...product of the side and perpendicular, and divide by 160. (ft) When three sides are given. Rule. — 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 divided by... | |
 | George Washington Hull - Arithmetic - 1895 - 408 pages
...if the three sides of a triangle are given and not the altitude, the area can be found as follows : From half the sum of the three sides subtract each side separately ; multiply the half sum and the three remainders together, and extract the square root of the product... | |
 | Horatio Nelson Robinson - Arithmetic - 1895 - 526 pages
...= GO ; CO - 30 = 30 ; 60 - 40 = 20 ; 60 - 50 = 10. V60 x 30 x 20 x 10 = 600 ft, area Ans. EULE. — From half the sum of the three sides subtract each side separately; find the continued product of the half-sum and the three remainders; the square root of this product... | |
 | Seymour Eaton - Business - 1896 - 328 pages
...72. Here is a very excellent rule for finding the area of a triangle when the three sides are given : From half the sum of the three sides subtract each side separately, multiply the half-sum and the three remainders together; the product will be the area. 73' To find... | |
 | William Seneca Sutton - 1896 - 342 pages
...base and altitude as the triangle. 366. To find the area of a triangle whose three sides are given: From half the sum of the three sides subtract each side separately; find the square root of the product of the half-sum and three remainders. 6. The base ef a triangular... | |
 | Frank Castle - Mathematics - 1899 - 424 pages
...Triangle A base x altitude ; or, half the product of two sides by the sine of included angle ; or, from half the sum of the three sides subtract each side separately. Multiply the half sum and the three remainders together and find the square root of the product. Area... | |
 | Peder Lobben - Mechanical engineering - 1899 - 460 pages
...same area. To Figure the Area of Any TriangIe when Only the Length of the Three Sides is Given. RULE. From half the sum of the three sides subtract each side separately ; multiply these three remainders with each other and the product by half the sum of the sides, and... | |
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RULE. from half the sum of the three 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 required. 
