 | 1836 - 530 pàgines
...meant that, radius ore one particular supposition, namely, that the angle 1 is that angle whose arc is equal to the radius, the number of these units...the radius being r, one half of the circumference is rx3. 14159266 ; and one-fourth of the circumference, or the arc of a right angle, is rx 1.57079633.... | |
 | Augustus De Morgan - 1898 - 316 pàgines
...meant that, on one particular supradius position, (namely, that the angle 1 is that angle whose arc is equal to the radius,) the number of these units...for our purpose, it follows that the radius being r, one-half of the circumference is r X 3.14159266 ; and one-fourth of the circumference, or the arc of... | |
 | George William Myers, Sarah Catherine Brooks - 1907 - 432 pàgines
...table: 5. Find the ratio of the circumferences to the diameters of the coins of problem 27, p. 90. 6. It is proved in Geometry that the ratio of the circumference of any circle to its diameter is about 3|, or more accurately 3.1416. If then, the diameter of a circle... | |
 | George William Myers, Sarah Catherine Brooks - 1907 - 436 pàgines
...table : 5. Find the ratio of the circumferences to the diameters of the coins of problem 27, p. 90. 6. It is proved in Geometry that the ratio of the circumference of any circle to its diameter is about 3|, or more accurately 3. 1416. If then, the diameter of a circle... | |
 | George William Myers - 1912 - 410 pàgines
...their circumferences to their diameters. If no circles are at hand use the measures of the table. 4. It is proved in Geometry that the ratio of the circumference of any circle to its diameter is about 3y, or more accurately 3.1416. If, then, the diameter of a circle... | |
 | George Morris Philips, Robert Franklin Anderson - 1913 - 520 pàgines
...CH= 3 ch., and EL = 3 ch. The Circle (For definition of terms and important facts see page 229.) 460. It is proved in geometry that the ratio of the circumference of a circle to the diameter is 3.1416, nearly. The Greek letter IT (pi) stands for this ratio ; then, if... | |
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When it is said that the angle = — ^r- — , it is only meant that, on one particular supradius position, (namely, that the angle 1 is that angle whose arc is equal to the radius,) the number of these units in any other angle is found by dividing the... 