how to compute radius and diameter?
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Just remember to divide the diameter by two to get the radius. If you were asked to find the radius instead of the diameter, you would simply divide 7 feet by 2 because the radius is one-half the measure of the diameter. The radius of the circle is 3.5 feet.
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['Radius: The distance from the center of the circle to its outer rim.', 'Chord: A line segment whose endpoints are on a circle.', 'Diameter: A chord that passes through the center of the circle. ... ', 'Secant: A line that intersects a circle in two points.']
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Write down the formula for finding the circumference of a circle using the diameter. The formula is simply this: C = πd. In this equation, "C" represents the circumference of the circle, and "d" represents its diameter. That is to say, you can find the circumference of a circle just by multiplying the diameter by pi.
444026
Answer: Diameter is 82 cm. The area of a circle is equal to the sum of the areas of two circles of radii 40 cm and 9cm. It means the radius of big circle is 41 cm and diameter is 82 cm.
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Find formulas for the circle's radius, diameter, circumference and area , in terms of 'a'. As we've shown above, the circle's radius is equal to the half the length of the square's side, so r=a/2. The diameter is twice the radius, so d=a. The circumference is d ·π, so C=πa.
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The area of a circle is: π (Pi) times the Radius squared:A = π r2. or, when you know the Diameter:A = (π/4) × D2.
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Divide the length of the diameter in half to find the footage of the radius. For example, if the diameter is 10, the radius is 5. Divide the circumference by 2π to find the radius.
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['public class Perimeter.', 'int r, l, b, s1, s2, s3;', 'double pi = 3.14,perimeter;', 'Scanner s = new Scanner(System.', 'void circle()', 'System. out. print("Enter radius of circle:");', 'r = s. nextInt();', 'perimeter = 2 * pi * r;']
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Use the formula C/2π. Since the circumference is equal to πD, which is equal to 2πr, dividing the circumference by 2π will give the radius. If you have a sphere with a circumference of 20 m, find the radius by dividing 20/2π = 3.183 m. Use the same formula to convert between the radius and circumference of a circle.
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['Measure the circular base to get the diameter.', 'Divide the diameter by 2 to get the radius.', 'Calculate the area with the formula: A = πr^2, where r is the radius.', 'Measure the height of the cylinder.', 'Multiply the area by the height to get the Volume.']
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Area of a circle. The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter.
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The Radius is the distance from the center outwards. The Diameter goes straight across the circle, through the center. The Circumference is the distance once around the circle. ... When we divide the circumference by the diameter we get 3.141592654...
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['Given radius and height calculate the slant height, volume, lateral surface area and total surface area. ... ', 'Given radius and slant height calculate the height, volume, lateral surface area and total surface area.']
608307
First, note the definition of radius and diameter. The radius is one-half the diameter or the diameter is twice the length of the radius. Next, multiply the radius by 2 to get 6. The answer is 6.
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Relation between Diameter and Radius: Diameter of a circle is twice of its radius.
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['d=2πr and r=12d.', 'Circumference of a circle (c)=2πr.', 'Area of a circle (A)=πr2.']
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The two formulas that are useful for finding the radius of a circle are C=2*pi*r and A=pi*r^2. We use algebra skills in solving for our variable r. We know that the constant pi is always 3.14. Another word related to the radius is diameter, which is always twice the radius.