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. Higher Book - Page 252by William Seneca Sutton - 1896Full view - About this book
| Popular educator - 1880 - 926 pages
...the calculation of the area of a triangle without finding its perpendicular, the three sides being **given :— From half the sum of the three sides subtract each side separately.** Then multiply the half sum by the three remainders successively, and the square root of the product... | |
| Thomas Liddell Ainsley - 1880 - 866 pages
...The area of a triangle may, however, be determined from its three sides by the following EULE LXV. **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 latí product... | |
| Samuel Mecutchen - Arithmetic - 1880 - 244 pages
...supply the deficiency with ciphers. RULES IN MENSURATI0N. SURFACES. To find the area of a triangle. **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... | |
| Horatio Nelson Robinson - Arithmetic - 1875 - 470 pages
...isosceles triangle whose base is 20 ft., each of its equal sides 15 ft. ? Ans. 111.85 sq. ft. 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.... | |
| Samuel Mecutchen - Arithmetic - 1880 - 262 pages
...supply the deficiency with ciphers. RULES IN MENSURATION. SURFACES. To find the area of a triangle. **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... | |
| George Bruce Halsted - Measurement - 1881 - 266 pages
...= 113-581 square meters. Ans. J b 36, Given the three sides of a triangle, to find the area. Eule : **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 will be the... | |
| Montagu H. Foster - 1881 - 182 pages
...2. Triangle. The area equals half the product of the %ase and perpendicular altitude. 3. Triaiigle. **From half the sum of the three sides subtract each side separately,** multiply the half sum by these three remainders, and extract the square root of the product. 4. Trapezium.... | |
| James Bates Thomson - Arithmetic - 1882 - 414 pages
...ft. wide, and 12£ ft. from the beam to the ridgepole. 810. To find the Area of a Triangle, when the **Three Sides are given. From half the sum of the three sides subtract each side** respectively ; then multiply half the sum and the three remainders together, and extract the square... | |
| William Dodds - 1883 - 202 pages
...find the length of the base. 69. To fiiid the area of a triangle when the three are given. RULE. 1°. **From half the sum of the three sides subtract each side separately.** 2°. Multiply the half sum and the throe remainders continually together. 3°. Take the square root... | |
| Daniel W. Fish - Arithmetic - 1883 - 364 pages
...area. 2. Find the area of a triangle whose base is 20 ft. and each of the other sides 15 ft. RULE. — **From half the sum of the three sides subtract each side separately** j multiply the half-sum and the three remainders together; the square root of the product is the area.... | |
| |