 | Canada - 1893 - 1092 pages
...their bases. 12. Similar triangles are to one another as the squares of their homologous sides. 13. The area of a circle is equal to half the product of the radius and the circumference. 14. Find u fourth proportional to three given straight lines. 15.... | |
 | George Albert Wentworth, George Anthony Hill - Geometry - 1894 - 150 pages
...nonparallel sides in the first is to the product of the corresponding sides in the second. 5. Prove that the area of a circle is equal to half the product of its circumference by its radius. • YALE COLLEGE, June, 1892. 1. Construct accurately by ruler and compass... | |
 | William Frothingham Bradbury - Arithmetic - 1895 - 186 pages
...is 66 feet ? 25. The circumference of a circle is 22 inches. What is the radius ? What is the area ? The area of a circle is equal to half the product of its circumference by its radius. 26. What is the area of a circle having a radius of 14 inches ? 27. The... | |
 | William Frothingham Bradbury - Arithmetic - 1895 - 398 pages
...circumference is 19 feet? 30. What is the circumference of a circular pond whose diameter is 56 yards ? 483. The area of a circle is equal to half the product of its circumference and its radius. Or, it is equal to 0.7854 times the square of its diameter. Area = |... | |
 | Mathematics - 1898 - 228 pages
...side about the right angle is a mean proportional between the hypothenuse and the adjacent segment. 3. The area of a circle is equal to half the product of its circumference by its radius. 4. Given the radius of a circle as 8 inches; find the circumference of... | |
 | Yale University - 1898 - 212 pages
...side about the right angle is a mean proportional between the hypothenuse and the adjacent segment. 3. The area of a circle is equal to half the product of its circumference by its radius. 4. Given the radius of a circle as 8 inches; find the circumference of... | |
 | 1898 - 872 pages
...four places of decimals, the ratio of the circumference of a circle to its diameter, having given that the area of a circle is equal to half the product of the circumference and the radius. 2. Find, correct to five places of decimals, the value of— 1 ~... | |
 | George Albert Wentworth - Geometry - 1899 - 496 pages
...is equal to the perimeter of the polygon. Ax. 9 . ' . S = -J- RX .PQED PROPOSITION XI. THEOREM. 461. The area of a circle is equal to half the product of its radius by its circumference. Let R represent the radius, C the circumference, and S the area, of the circle whose centre is O. To prove... | |
 | George Albert Wentworth - Geometry, Modern - 1899 - 272 pages
...equal to the perimeter of the polygon. Ax. 9 •'• S = %R X P. QED PROPOSITION XI. THEOREM. 461. The area of a circle is equal to half the product of its radius by its circumference. E c Let R represent the radius, C the circumference, and S the area, of the circle whose centre is... | |
 | George Albert Wentworth - Geometry - 1899 - 500 pages
...sectors, and similar segments are such as correspond to equal angles at PROPOSITION XI. THEOREM. 461. The area of a circle is equal to half the product of its radius by its circumference. M Let R represent the radius, C the circumference, and S the area, of the circle whose centre is 0.... | |
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It follows, then, that the area of a circle is equal to half the product of its circumference and its radius. 
