 | Scottish school-book assoc - 1845 - 444 pages
...yards. PROBLEM VII. To find the diameter and circumference of a circle the one from the other. CASE I. To find the circumference of a circle when the diameter is given. RULE. Multiply the diameter by sj>, ^73 or 3'1416, and the product will be the circumference nearly.... | |
 | Frederick Walter Simms - 1845 - 184 pages
...=1.77245385. =114.59155903. =0.88622692. =0.78539816. SOME USES OF THE FOREGOING TABLE IN CALCULATING AREAS. To find the circumference of a circle when the diameter is given. Rule. — Multiply the given diameter by the factor C, using any number of decimals that may be considered... | |
 | James Robinson (of Boston.) - 1847 - 304 pages
...octagon whose side is 20 rods? 6. What is the area of a dodecagon whose side is 30 feet ? Art. 2O1« To FIND THE CIRCUMFERENCE OF A CIRCLE WHEN THE DIAMETER IS GIVEN. RULE. Multiply the diameter by 3. 1416 ; the product will be the circumference. 1. Suppose the diameter... | |
 | Thomas Tate (mathematical master.) - 1848 - 284 pages
...2771-28 sq.ft. 7. PROBLEM. To find the diameter and circumference of a circle, the one from the other. RULE. Multiply the diameter by 3-1416, and the product will be the circumference. And conversely, divide the circumference by 3-1416, and the quotient will be the diameter. (See Geo.... | |
 | Charles Davies - Trigonometry - 1849 - 372 pages
...Ans. 1075.298375. 3. To find the area of a decagon whose side is 20. Ans. 3077.08352. PROBLEM VIII. i To find the circumference of a circle when the diameter is given, or the dicmeter when the circumference is given. Rn.E.—Multiply the diameter by 3.1410, and the product... | |
 | J. M. Scribner - Mechanical engineering - 1849 - 286 pages
...length, the longest of which is called the transverse, and the shortest the conjugate axis. PROBLEM L To find the Circumference of a Circle when the Diameter is given. Rule. — Multiply the diameter by 3-1416, and the product will be the circumference. Or, multiply... | |
 | Thomas Rainey - Arithmetic - 1849 - 320 pages
...Ans. Here, we multiply by the decimals, and consequently cast off four decimals in the result. Hence, To find the circumference of a. circle, when the diameter is given, multiply the diameter 6y3.1416, and cut off four places of decimals in the -answer : or, for entire... | |
 | Charles Davies - Geometry - 1850 - 238 pages
...5,4 ; 8 ; 5,2 ; 6,5 ; and 6,1 : what is the area ? Ans. 219,255. PROBLEM x. Mensuration of Surfaces. RULE Multiply the diameter by 3,1416, and the product will be the circumference. EXAMPLES. 1. What is the circumference of a circle whose diametei is 17? We simply multiply the Operation.... | |
 | James Bates Thomson - Arithmetic - 1850 - 352 pages
...and 16 ft.? ' Ans. 59.92+ft. 13. What is the area of a triangle whose sides are each 12 yds. ? cE81o To find the circumference of a circle, when the diameter is given. (Leg. Y. 11. Sch.) Multiply the given diameter by 3.14159. Note. — The.circumferenee of a circle... | |
 | James Elliot - 1851 - 152 pages
...14. What is the altitude of an equilateral triangle whose side is 1 ? Ans. •866025 + . PROBLEM VI. To find the Circumference of a Circle, when the Diameter is given. RULE. Multiply the diameter by 3•1416 — . FORMULA. BET. FORMULA. n D being the diameter ; C, the... | |
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To find the circumference of a circle when the diameter is given, or the diameter when the circumference is given. RULE. — Multiply the diameter by 3.1416... 
