 | George Albert Wentworth - Algebra - 1888 - 514 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. CHAPTER XVI. * •PROGRESSIONS. 216. A succession of numbers that proceed according to some... | |
 | Webster Wells - Algebra - 1889 - 584 pages
...respectively, 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. Three spheres of lead whose diameters are 3, 4, and 5 inches, respectively, are melted... | |
 | George Albert Wentworth - Algebra - 1890 - 518 pages
...between z x and z if a: = 1, у = 3, when z= £. l z z /. m = — 5 1+3=-^ ' =10 -5 10 Add, 2x =. 5z 8. The area of a circle varies as the square of its radius, and the area of a circle whose radius is 1 foot is 3.1416 square feet. Find the area of a circle whose... | |
 | George Albert Wentworth - Algebra - 1891 - 544 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 Parsons Tibbets - Algebra - 1892 - 80 pages
...show that a : b : : V3a2 + 5c' 6. Prove that a proportion taken by division is a true proportion. 7. The area of a circle varies as the square of its radius and the area of a circle is 154 sq. ft. when the radius is 7 ft. Find the area of the circle whose... | |
 | James Morford Taylor - Algebra - 1893 - 358 pages
...of x varies as the square of y, and if x = 3 when у = 5 ; find the equation between x and y. 11. If the area of a circle varies as the square of its radius, and if the area of a circle is 154 square feet when the radius is 7 feet ; find the area of a circle... | |
 | Matthew Scoby McCurdy - 1894 - 240 pages
...is 10 feet is 314.159 square feet. 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. 17. From the same law show that the area of a circle 2£ inches in diameter is equal to the sum of... | |
 | Henry Sinclair Hall, Samuel Ratcliffe Knight - Algebra - 1895 - 508 pages
...respectively, and when x=\, y=4, when .37=2, y=S, and when #=3,y = 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 feut when the radius is 7 feet ; find the area of a circle... | |
 | Henry Sinclair Hall, Samuel Ratcliffe Knight - Algebra - 1897 - 552 pages
...when x = 1, y = 4¡, when a; = 2, у = 8, and when x = 3, г/ = 18, express г/ 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... | |
 | Northwest Territories Council of Public Instruction - 1897 - 628 pages
...Explain the meaning of the terms (1) a ratio of greater inequality, (2) incommensurable numbers. (b) If the area of a circle varies as the square of its radius, find the radius of a circle which i& equal in area to the sum of the areas of two circles, whose radii... | |
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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. 
