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Does the circumference of a circle vary directly with its radius?
yes
What is a proportional ratio?
In mathematics, two quantities are proportional if they vary in such a way that one of them is a constant multiple of the other.
How would you find the radius of a circle with a circle with a circumference of 68cm?
First, divide the circumference by Pi (about 3.1416): 68 / 3.1416 = 21.65 cm. This is the diameter. Now, divide the diameter by two to get the radius: 21.65 / 2 = 10.825 cm.The radius is: 10.825 cmNote: The result will vary slightly depending on the value you use for Pi
What is the square ft of a cylinder 18 by 32?
The answer will vary, depending on which of the two is the height, and which is the diameter of the base. To get the surface area, add up the two circles and the mantle, that is, use the formula: area = 2 x pi x radius2 + 2 x pi x radius x height, or the equivalent (2 x pi x radius)(radius + height).
How many dollars for 250pounds?
£250 into dollars is $390.66. This is because the ratio of British Pounds to dollars currently is 1:1.563. So 250 multiply by 1.563 equal to $390.66. This does vary hourly as the conversion will vary.
