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You're supposed to know that
Circumference = (pi) x (diameter)
Divide each side of this equation by (pi) :
Diameter = Circumference/pi
And you also know that Diameter = 2 x Radius .
2 x Radius = Circumference/pi
Divide each side of that one by 2 :
Radius = Circumference/2 x pi .
and that's exactly what you need.
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ProfessorRemember the circle equations.
C = pi d
or
C = 2 pi r
NB d = 2r
By algebraic rearrangement
r = C / (2 pi)
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If the circumference of the circle is 75.36 what is the radius?
To find the radius of a circle when given the circumference, you can use the formula: circumference = 2 * π * radius. Given that the circumference is 75.36, you can plug this value into the formula and solve for the radius. First, divide the circumference by 2π to find the radius. The radius of the circle would be 75.36 / (2 * 3.14159) ≈ 12. The radius of the circle is approximately 12 units.
What is the radius of a circle whose circumference is 94.2?
To find the radius of a circle when given the circumference, you can use the formula C = 2πr, where C is the circumference and r is the radius. Given that the circumference is 94.2, you can plug this value into the formula: 94.2 = 2πr. To find the radius, you can rearrange the formula to solve for r: r = 94.2 / (2π) ≈ 15.0 units. Therefore, the radius of the circle is approximately 15.0 units.
What is the formula for finding the diameter of a circle when the circumference is given?
C = pi d By algebraic rearrangement d = C / pi
How do you find the radius when you have the circuference?
circumference = pi * 2radius (diameter) so to find radius you use circumference/(2 x pi) this will find radius ----
Given the circumference of a circle what is the radius?
Circumference equals the diameter times pi. The diameter is 2 times radius. Radius equals Circumference divided by pi then divided by 2.
