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The formula for finding the circumference is the diameter times pi

because the radius is half of the diameter, the diameter of this circle would be 8

8 times pi equals approximately 25.1327

Or you could leave it in terms of pi and say 8pi (using the symbol)

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โˆ™ 2010-03-10 23:25:02
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Q: What is the circumference of a circle with a radius of 4 inches?
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Related questions

What is the circumference of a circle if the radius is 4 inches?

The circumference of a circle if the radius is 4 is about 25.13 units. (C = r x 2 x Pi)


What is the circumference of a circle when the radius is 4 inches?

The formula for circumference of a circle is 2πr. Since the radius is 4, the circumference is 8π or approximately 25.12 inches.


What is the circumference of a circle with a diameter of 8inch's?

A circle with a radius of 4 inches has a circumference of 25.13 inches.


What is the circumference of a circle with a radius of 4in?

circumference = 2*pi*4 inches


What is the radius of a circle with circumference 8pi inches?

radius of a circle = 4 inchesCircumference of a circle = 2π radiusradius = circumference/ 2π= 8π/2π= 8/2= 4


What is the radius of a circle with circumference 8 pi inches?

radius of a circle = 4 inchesFormulas:Circumference of a circle = 2π radiusradius =circumference/2π=8π/2π=8/2= 4


If the radius of a circle is 4 inches what is the diameter circumference and area?

If the radius of a circle is four inches the diameter, circumference and area are:Diameter = 8 inchesCircumference = 25.13 inchesArea = 50.27 square inches


How do you find the circumference of a circle if you know the radius?

Multiply the radius by 2 to get the diameter. Then multiply the diameter by pi to get the circumference. Example: If radius = 2 inches, diameter = 4 inches circumference = 4 x pi = 4 (3.1416) or about 12.57 inches


What is the circumference of a circle with the radius of 4?

The circumference of a circle with a radius of four is: 25.13


32 A circle has a radius of 2 inches What is its circumference?

4*pi or 12.56


If a circle's circumference is 4pi inches and it's area is 4pi square inches what is the radius of the circle in inches?

Circumference is pi * r * 2. Area is pi * r2. In your circle, both r * 2 and r2 equal 4. Your radius is 2 inches.


How do you figure out the circumference of a circle?

Take "pi" times the diameter of the circle. Pi = 3.14159 (ALWAYS) If circle has a diameter of 10cm, circumference 31.41cm If circle has a radius of 2inches, the circumference is 12.57 inches. (radius = 2, diameter = 4)

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