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" Given that the area of a circle varies as the square of its radius... "
Complete School Algebra - Page 472
by Herbert Edwin Hawkes, William Arthur Luby, Frank Charles Touton - 1919 - 507 pages
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Report of the Council of Public Instruction of the North-West Territories of ...

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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Sessional Papers, Volume 22, Part 2

Great Britain. Parliament. House of Commons - Great Britain - 1900 - 686 pages
...— . A i *9. II b + c + d:c + d + a = d+a + b:a+b + c, prove that a*-d*:ad = b*-cs:bc. Assuming that the area of a circle varies as the square of its radius, find what fraction of the radius of a grindstone must be ground away so that only half the grindstone...
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Elements of Algebra

James Morford Taylor - Algebra - 1900 - 508 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...
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An Algebra for High Schools and Academies

Louis Parker Jocelyn - Algebra - 1902 - 458 pages
...occupied in falling. If a ball falls 402.5 feet in 5 seconds, how far will it fall in 10 seconds ? 14. The area of a circle varies as the square of its radius. The area of a circle whose radius is 10 feet is 314.159265. Find the area of a circle whose radius is 12 feet. 15....
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High School Algebra

Middlesex Alfred Bailey - Algebra - 1902 - 318 pages
...does the area of a circle vary ? Let A = area ; then A = wr* and — = ir. Since я- is a constant, the area of a circle varies as the square of its radius. 6. The volume of a sphere equals $ irr3. How does the volume of a sphere vary ? 7. The volume of a...
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Elements of Finite Differences: Also Solutions to Questions Set for ... the ...

Sir Joseph Burn, E. H. Brown - Calculus - 1902 - 276 pages
...are as high as q pennies, compare the value of equal bulks of gold and copper, it being assumed that the area of a circle varies as the square of its radius, and that the value of the copper in 240 pennies is equal to that of the gold in a sovereign. 1896.—...
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College Algebra

Leonard Eugene Dickson - Algebra - 1902 - 240 pages
...air in an air-tight room, when the temperature is raised from 0 to 40 Centigrade? 10. Given that the area of a circle varies as the square of its radius, show that a circle of 5 inches radius equals the sum of two circles of radii 3 and 4 inches. CHAPTER...
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Algebra Adapted to the Requirements of the First Stage of the ..., Part 2

Edward Mann Langley, S. R. N. Bradly - Algebra - 1903 - 280 pages
...circle and n — 1 concentric rings, the areas of which and of the central circle are all equal. If the area of a circle varies as the square of its radius, and the cost of painting the target varies as re(re + l), show that the cost of paint for any ring...
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Examples in Algebra

Charles Orpen Tuckey - Algebra - 1903 - 204 pages
...varies as the depth or that (ii) the increase of temperature varies as the increase of depth ? (11) The area of a circle varies as the square of its radius. Given that a circle of radius 5-75 inches has area 103'86 square inches, find the area of a circle...
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Elementary Algebra

John Henry Tanner - Algebra - 1904 - 400 pages
...= 7. 7. If x varies inversely as y, and x = 10 when у = 3, what is the value of x when у = 5? 9. The area of a circle varies as the square of its radius, and the area of a circle whose radius is 10 ft. is 31-1.10 sq. ft. What is the area of a circle whose...
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