 | John Fair Stoddard - Arithmetic - 1888 - 480 pages
...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... | |
 | John Groesbeck - Arithmetic - 1868 - 350 pages
...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... | |
 | Isaac Todhunter - Measurement - 1869 - 312 pages
...the quotient is the height. 152. The three sides of a triangle being given, to find the area. RULE. From half the sum of the three sides subtract each...multiply the half sum and the three remainders together : the square root of the product witt be the area. 153. Examples : (1) The sides of a triangle are... | |
 | Sir Rowland Macdonald Stephenson - Railroads - 1869 - 446 pages
...sides only are given : add the three sides all together, and take half the sum ; from the half sum subtract each side separately; multiply the half sum and the three remainders continually together ; and take the square root of the last product for the area of the triangle. 1.... | |
 | Alfred Hiley - 1871 - 184 pages
...the height, and divide the product by 2. (2) To find the area, when the three sides are given. Prom half the sum of the three sides, subtract each side...the half sum and the three remainders together, and the square root of the product is the area. THE TRIANGLE. Kg. 3. sion are given. — (a) Divide double... | |
 | John Groesbeck - 1872 - 374 pages
...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 tquare root of the product. To find... | |
 | Henry William Jeans - 1873 - 292 pages
...area. Ans. 80627 square yards. RULE VII. Three sides of a plane triangle being given, to find the area. From half the sum of the three sides, subtract each side separately. Add together the log. of the half sum and the logarithms of the three remainders. Half the result will... | |
 | Daniel W. Fish - Arithmetic - 1874 - 526 pages
...area of an isosceles triangle whose base is 20 ft., and each of its equal sides 15 feet ? RULE. — From half the sum of the three sides, subtract each...multiply the half -sum and the three remainders together; the square root of the product is the area. 3. Find the area of a triangle whose sides are 25, 36,... | |
 | Daniel W. Fish - Arithmetic - 1874 - 298 pages
...area of an isosceles triangle whose base is 20 ft., and each of its equal sides 15 feet ? EULE. — From half the sum of the three sides, subtract each side separately ; multiply the half -turn and the three remainders together; the square root of the product is the area. 3. Find the area... | |
 | Daniel W. Fish - Arithmetic - 1874 - 300 pages
...area of an isosceles triangle whose base is 20 ft., and each of its equal sides 15 feet ? RULE. — From half the sum of the three sides, subtract each side separately ; multiply the half-surn ami the three remainders together; the square root of the product is the area. 3. Find the... | |
| |
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. 
