Well, darling, the circumference of a circle is calculated using the formula C = 2πr. So, with a radius of 21 cm, you just plug that bad boy in and get C = 2 x π x 21 = 132 cm. Voilà, there you have it!
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The circumference of a circle with an 8 cm radius is: 50.27 cm
The circumference of a circle with a radius of 8.5 cm is: 53.41 cm (radius x 2 x Pi = circumference).
The radius of the circle is: 9.549 cm
If the radius of a circle is 15 cm, the circumference is: 94.2 cm
The circumference of a circle with radius of 10cm is: 62.83 cm
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.
The radius of any circle is the straight line distance from the centre of the circle to any point on the circumference of the circle. The radius being 21 cm makes no difference to the definition of the radius; it just means that the straight line distance from the centre of that circle is 21cm away from any point on the circumference of that circle. The radius of a circle with a radius of 21 cm is 21 cm.
If a circle has a circumference of 16 cm then the radius is about: 2.546 cm
The circumference of a circle if the if the radius is 6 cm is: 37.7 cm
The circumference of a circle with an 8 cm radius is: 50.27 cm
If the circumference of a circle is 12 cm the radius is: 1.91 cm
A circle with a radius of 0.5 cm has a circumference of 3.14 cm.
A circle with a radius of 208 cm has a circumference of 1306.9 cm
A circle with a radius of 9.2 cm has a circumference of 57.81 cm
A circle with a radius of 7.7 cm has a circumference of 48.38 cm
The circumference of a circle, if its radius is 3.2 cm, is about 20.11cm
The circumference of a circle with a radius of 8.5 cm is: 53.407 cm