 | 1835 - 496 σελίδες
...called the periphery or circumference, and is the greatest space that can be inclosed under one line. TO FIND THE AREA OF A CIRCLE. Multiply half the circumference by half the diameter, and the product will be the area. The diameter of a circle being given to find the circumference. As... | |
 | Roswell Chamberlain Smith - 1841 - 324 σελίδες
...; or simply multiply by 3.14159. 51. To find the diameter, — Reverse the foregoing processes. 52. To find the area of a circle : — Multiply half the circumference by half the diameter, or the whole circumference by half the radius. 1 53. Suppose one field is 60 rods square, and another... | |
 | Roswell Chamberlain Smith - 1842 - 320 σελίδες
...; or simply multiply by 3.14159. 51. To find the diameter, — Reverse the foregoing processes. 52. To find the area of a circle : — Multiply half the circumference by half the diameter, or the whole circumference by half the radius.] 53. Suppose one field is 60 rods square, and another contains... | |
 | Roswell Chamberlain Smith - 1843 - 320 σελίδες
...113 ; or simply multiply by 3.14159. 51. To find the diameter,—Reverse the foregoing processes. 52. To find the area of a circle :—Multiply half the circumference by half the diameter, or the whole circumference by half the radius A 53. Suppose one field is 60 rods square, and another contains... | |
 | Roswell Chamberlain Smith - 1850 - 314 σελίδες
...; or simply multiply by 3.14159. 51. To find the diameter, — Reverse the foregoing processes. 52. To find the area of a circle : — Multiply half the circumference by half the diameter, or the whole circumference by half the radius .1 53. Suppose one field is 60 rods square, and another... | |
 | Oliver Byrne - 1851 - 310 σελίδες
...0514 = 4-2959, which added to twice the chord of half the arc gives 64-2959 = the length of the arc. To find the area of a circle. — Multiply half the circumference by half the diameter, and the product will be the area. Or take J of the product of the whole circumference and diameter.... | |
 | Roswell Chamberlain Smith - 1856 - 334 σελίδες
...; or simply multiply by 3.14159. 51. To find the diameter, — Reverse the foregoing processes. 52. To find the area of a circle : — Multiply half the circumference by half the diameter, or the whole circumference by half the radius. 1 53. Suppose one field is 60 rods square, and another... | |
 | Oliver Byrne - 1863 - 600 σελίδες
...-^iT• ~ -9o9, which added to twice the chord of half the arc gives 64-2959 = the length of the arc. To find the area of a circle. — Multiply half the circumference by half the diameter, and the product will be the area. Or take \ of the product of the whole circumference and diameter.... | |
 | Henry Lewis (M.A.) - 1875 - 104 σελίδες
...but different ways of stating one and the same thing. One of the simplest of them is as follows : — To find the area of a circle, multiply half the circumference by the radius. You will no doubt notice that this is really the same rule as that for finding the area... | |
 | Herbert Edward Walmsley - 1885 - 334 σελίδες
...THE ONE FROM THE OTHER. 127 Divide the circumference by 3'1416, and the product will be the diameter. TO FIND THE AREA OF A CIRCLE. Multiply half the circumference by half the diameter, or multiply the square of the diameter by '7854, and the result of either will be the area. Circumference. Area. Squares.... | |
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... accurately as 113 : 355, or decimally, as 1 : 3.14159 nearly, therefore, 50. To find the circumference, — Either multiply the diameter by 22, and divide by 7 ; or multiply by 355 and divide by 113 ; or simply multiply by 3.14159. 51. To find the... 