 | George Farncomb Wright - 1857 - 98 pages
...value of a half-crown, what would be the ratio of the diameters of such a coin and a halfsovereign? (NB The area of a circle varies as the square of its radius.) ARITHMETICAL PROGRESSION. EXERCISE XXXV. 1. WHEN are quantities said to be in Arithmetical Progression?... | |
 | Isaac Todhunter - Algebra - 1858 - 530 pages
...are melted and formed into a single circular plate one inch thick. Find its diameter, having given that the area of a circle varies as the square of its diameter. 14. There are two globes of gold whose radii are r and r ; they are melted and formed into... | |
 | Robert Fowler - 1861 - 426 pages
...if when x = 2, z = 5, state the relation x between x and у in the form of a proportion. 20. Given that the area of a circle varies as the square of its radius, find the ratio between the areas of two circles whose radii are 2 feet and £ a foot respectively.... | |
 | Isaac Todhunter - Algebra - 1866 - 618 pages
...are melted and formed into a single circular plate one inch thick. Find its diameter, having given that the area of a circle varies as the square of its diameter. 15. If x, y, z be variable quantities such that y + z — x is constant, and that (x + y... | |
 | Elias Loomis - Algebra - 1868 - 386 pages
...respectively, are melted and formed into a single circular plate 1 inch thick. Find its diameter, admitting that the area of a circle varies as the square of its diameter. / - r >- ' ! ^ 19. Find the radius of a sphere whose volume is equal to the sum of the volumes... | |
 | Elias Loomis - Algebra - 1873 - 396 pages
...respectively, are melted and formed into a single circular plate 1 inch thick. Find its diameter, admitting that the area of a circle varies as the square of its diameter. 19. Find the radius of a sphere whose volume is equal to the sum of the volumes of three... | |
 | Webster Wells - Algebra - 1879 - 468 pages
...are melted and formed into a single circular plate one inch thick. Find its diameter, having given that the area of a circle varies as the square of its diameter. 8. Given that the illumination from a source of light varies inversely as the square of the... | |
 | George Albert Wentworth - Algebra - 1881 - 406 pages
...respectively, are melted and formed into a single circular plate 1 inch thick. Find its diameter, having given that the area of a circle varies as the square of its diameter. 18. The volume of a pyramid varies jointly as the area of its base and its altitude. A pyramid,... | |
 | George Albert Wentworth, George A. Hill - Arithmetic - 1884 - 156 pages
...respectively, are melted into one plate of the same thickness. Find the diameter of this plate, knowing that the area of a circle varies as the square of its diameter. 4. Find the cube root of 0.2"5 to four decimal places. 5. How many miles will be travelled... | |
 | Henry Sinclair Hall, Samuel Ratcliffe Knight - Algebra - 1885 - 412 pages
...respectively, and when x=\, y=4, when я=2, y=8, and when x=3, у = 18, express у in terms of x. 20. Given that the area of a circle varies as the square of its radius, and that the area of a circle is 154 square feet when the radius is 7 feet ; find the area of a circle... | |
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Find the area of a circle whose radius is 12 feet, from the law that the area of a circle varies as the square of its radius. 
