 | George Washington Hull - Arithmetic - 1895 - 408 pages
...= 2 X Radius X 71, Area = 2 X Radius X 71 X ^ Radius, or, Area = 71 X Radius2, or 71 R2. Hence, II. To find the area of a circle, multiply the square of the radius by 3.1416. WRITTEN EXERCISES. Find the area of a circle whose — 1. Radius is 10 ft. 2. Diameter is 40... | |
 | Horatio Nelson Robinson - Arithmetic - 1895 - 526 pages
...units in area. II. To find the area of a triangle, multiply the base by one half the altitude. III. To find the area, of a circle, multiply the square of the diameter by .7854. IV. Toßnd the circumference of a circle, multiply the diameter by 3.1416. 118.... | |
 | William Allen Sylvester - Architecture, Domestic - 1896 - 278 pages
...— Multiply the base by half of the perpendicular, or multiply half the base by the perpendicular. To find the Area of a Circle. — Multiply the square of the; diameter by .7854. To find the Cirewnference of a Circle. — Multiply the diameter by 3.1416. To find... | |
 | William Seneca Sutton - 1896 - 342 pages
...(or by 3\). 374. To find the diameter of a circle : Divide the circumference by 3.14159 (or by 375. To find the area of a circle : Multiply the square of the diameter by .7854 or, multiply the PROBLEMS. 1. Find the circumference of a wheel whose diameter is... | |
 | Seymour Eaton - Business - 1896 - 330 pages
...take half the product. 45- To find the circumference of a circle, multiply the diameter by 3.1416. 46. To find the area of a circle, multiply the square of the diameter by .7854. 47. To find the area of the surface of a globe multiply the square of the diameter... | |
 | George Albert Wentworth - 1898 - 424 pages
...more square meters of painting on the walls of the larger room than on those of the smaller ? 146. To Find the Area of a Circle, Multiply the square of the radius by 3.1416 ; or, multiply the square of the diameter by 0.7854 (i of 3.1416). 10. What is the area of a... | |
 | George Albert Wentworth - Arithmetic - 1898 - 424 pages
...more square meters of painting on the walls of the larger room than on those of the smaller ? 146. To Find the Area of a Circle, Multiply the square of the radius by 8.1416 ; or, multiply the square of the diameter by 0.7854 (i of 3.1416). 10. What is the area of a... | |
 | George Albert Wentworth - Arithmetic - 1898 - 424 pages
...more square meters of painting on the walls of the larger room than on those of the smaller ? 146. To Find the Area of a Circle, Multiply the square of the radius by S-H1Q ; or, multiply the square of the diameter by 0.7854 (i of 3.141 6). 10. -What is the area of... | |
 | Fritz Wilhelm Woll - Silage - 1900 - 246 pages
...CIRCUMFERENCES AND AREAS OF CIRCLES. To find the circumference of a circle, multiply the diameter by 3.1416. To find the area of a circle, multiply the square of the diameter by 0.7854. To find the cubical content of a cylinder, multiply the area of the base (floor)... | |
 | George Velten Steeb - Fire insurance - 1902 - 230 pages
...from pipes under the same head of water are to each other as the square root of their fifth power. To find the area of a circle, multiply the square of the diameter by .7854, or multiply half the diameter by half the circumference. The diameter of a circle... | |
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To find the area of a circle, multiply the square of the diameter by .7854. 
