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Remember the eqution and comit to memory
C = 2pir
or
C = pi d
Where 'C' is the circumference
'r' is the radius
'd' is the diamter.
and 'pi' is the constant of proportion of circles at 3.141592.... usually approximated to 3.14
e.g. If the radius is 5
Then C = 2 * 3.14 * 5
C = 10*3.14
C = 31.4
What else can I help you with?
How do you find the area of a circle without knowing the radius?
If the circumference or diameter is given then you can find the radius or simply measure the distance from the centre of the circle to the circumference.
What is the radius of a circle with a circumference 26 inches?
To find the radius of a circle with a given circumference, you can use the formula: circumference = 2 * π * radius. Given that the circumference is 26 inches, you can plug this value into the formula and solve for the radius. Dividing the circumference by 2π gives you the radius of the circle, which in this case is approximately 4.14 inches.
The circumference of a circle is 132cm what is the radius of the circle in centimeters?
To find the radius of a circle when given the circumference, you can use the formula for the circumference of a circle: C = 2πr, where C is the circumference and r is the radius. Given that the circumference is 132 cm, you can plug this value into the formula: 132 = 2πr. To solve for the radius, divide both sides by 2π: r = 132 / (2π) ≈ 21 cm. Therefore, the radius of the circle is approximately 21 centimeters.
What is the radius if the circumference is 54?
Well, darling, if the circumference is 54, then we can use the formula C = 2πr to find the radius. Just plug in the circumference (54) and solve for r. So, 54 = 2πr, divide by 2π, and you'll find that the radius is 27/π or approximately 8.59. Voilà!
What is the radius of a circle with a circumference of 44?
Oh, dude, you're hitting me with some math here. So, if the circumference is 44, we use the formula Circumference = 2 * π * radius. Just divide 44 by 2π (which is about 6.28) to get the radius. So, the radius is approximately 7. Oh, the joys of circles and their sneaky circumference-to-radius conversions!
How do you find the radius if circumference is given?
Divide the circumference by 2PI to find the radius. ( C = 2PI*Radius)
How can you find the diameter and the radius if the circumference is given?
Diameter = circumference/pi Radius = circumference/2*pi
How do you find length and width given the circumference?
If you mean the diameter and radius of a circle given the circumference it is:- diameter = circumference/pi radius = circumference/(2*pi)
When given radius how do you find the circumference?
Circumference = 2 * radius * pi (where pi is approx = 3.14159)So Radius = Circumference / (2 * pi)
What is the formula to find circumference when you are given the radius?
To find the circumference of a circle the formula is: 2*pi*radius or diameter*pi
When given the circumference how do you find the diameter and radius?
divide 3.14 by circumference and d=2r
How do you find the radius of a circle when only given the circumference?
Divide the circumference by (2*pi)
How can I find circumference when only area is given?
Radius = square root of (area/pi) Circumference = 2*pi*radius
How do you find radius of a circle if circumference is given?
circumference = 2 x π x radius ⇒ radius = circumference ÷ (2 x π) Divide the circumference by two times π (≈ 6.283).
How do you find the area of a circle without knowing the radius?
If the circumference or diameter is given then you can find the radius or simply measure the distance from the centre of the circle to the circumference.
How do you find circumference of a circle given?
circumference of a circle = 2*pi*radius or pi*diameter
How do you find the radius of a circle when the circumference is given?
Divide the circumference by the value of Pi, then halve that result.
