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How do you work out the circumference of a circle using radius?
Wiki User
∙ 15y ago
The formula for calculating the circumference of a circle is 2πr, where r is the radius of the circle and π is 3.1415926535890793 - usually shorted to either 3.1416 or 3.14
So that the circumference of a circle with a radius of 10 units is 62.83 units There are pi radians in a half of a circle. Thus, the measure of a central angle which is a straight line is pi radians. We have a formula that show that the length of an intercepted arc is equal to the product of the angle in radians that intercepts that arc, with the length of the radius of the circle. So we can say that the length of a semicircle is (pi)(r). In a full circle are 2pi radians. So the length of intercepted arc from a central angle with measure 2pi is 2(pi)(r).
Wiki User
∙ 15y ago
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How do i work out the circumference of a circle from the radius?
The circumference of a circle with a known radius and can calculated using the following formula: C = 2Π(r)
What is the radius and the area of a circle?
The radius of a circle is the distance from the center to any point on the circle. The area is the space within the circle. The formula to find the area is πr2. r stands for the radius of the circle. If you want to find the radius, you can work backwards from the area or the circumference, which is the perimeter of the circle. The formula for circumference is 2πr.
How do you show your work to go with how to find the circumference of a circle if the radius is 5?
Circumference = 2*pi*radius In this case radius = 5 units so circumference = 31.4159 units approx.
How do you work out the radius?
C=2*pi*r Radius is the circumference of the circle divided by 2pi. Therefore, if the circumference was C then the following formula works out the radius: r=C/(2*pi)
How do you find the curcumfrence of a 14 cm circle?
Circumference is (pi x diameter of circle). (Diameter is the distance across the circle, going through the very centre. It is also twice the radius, which is the distance from the middle of the circle to the outer edge). In the question you don't indicate what the 14cm is (i.e. diameter/radius ?), so I can't work it out for you.
How do i work out the circumference of a circle from the radius?
The circumference of a circle with a known radius and can calculated using the following formula: C = 2Π(r)
Work out the radius of a circle from the circumference?
c=2*pie*r c= circumference r= radius.
What is the radius and the area of a circle?
The radius of a circle is the distance from the center to any point on the circle. The area is the space within the circle. The formula to find the area is πr2. r stands for the radius of the circle. If you want to find the radius, you can work backwards from the area or the circumference, which is the perimeter of the circle. The formula for circumference is 2πr.
How do you show your work to go with how to find the circumference of a circle if the radius is 5?
Circumference = 2*pi*radius In this case radius = 5 units so circumference = 31.4159 units approx.
What is the circumference of a circle if the radius is 4.4 cm?
Work it out the circumfrance of a circle is pie x the diameter!
How do you work out the circumpherence of a circle?
The circumference of a circle is (pi) x (diameter), or (2 pi) x (radius).
How do you work out the circumference of a circle?
Twice the radius times pi or the diameter times pi
How does a diameter work?
it uses to find out thearea and circumference of circle. diameter=2*radius
How do you work out the radius?
C=2*pi*r Radius is the circumference of the circle divided by 2pi. Therefore, if the circumference was C then the following formula works out the radius: r=C/(2*pi)
How do you work out the area if given the circumference?
Assuming the shape concerned is a circle, Radius = Circumference/(2*pi)and thenArea = pi*(radius)2= pi*(circumference)2/(2*pi)2= (circumference)2/(4*pi)Assuming the shape concerned is a circle, Radius = Circumference/(2*pi)and thenArea = pi*(radius)2= pi*(circumference)2/(2*pi)2= (circumference)2/(4*pi)Assuming the shape concerned is a circle, Radius = Circumference/(2*pi)and thenArea = pi*(radius)2= pi*(circumference)2/(2*pi)2= (circumference)2/(4*pi)Assuming the shape concerned is a circle, Radius = Circumference/(2*pi)and thenArea = pi*(radius)2= pi*(circumference)2/(2*pi)2= (circumference)2/(4*pi)
Was does Pi equall?
It is the ratio of the circumference (C) and the diameter (D) of a circle. Using pi and the diameter of a circle, you can work out the circumference.
What is the radius of a circle that has a circumference of 81.64?
12.99 to two decimal places. I'll leave you to work out how the answer is obtained !
