Formulas
What is d=2r?
The radius of a circle with a diameter of 12.
What is 6?
The diameter of a circle with a radius of 4.
What is 8?
The circumference of a circle with a radius of 1.
What is 6.28?
The perimeter of a semicircle whose radius is 1.
The formula for Radius.
What is r=(1/2)d?
The radius of a circle with a diameter of 4.8.
What is 2.4?
The diameter of a circle with a radius of 0.48.
What is 0.96?
The circumference of a circle with a radius of 3.
What is 18.84?
The perimeter of a semicircle whose radius is 4.
The formula for circumference when using the radius.
What is
C=2pir
The radius of a circle with a circumference of 6.28.
What is 1?
The diameter of a circle with a circumference of 9.42.
What is 3?
The circumference of a circle with a diameter of 3.2.
What is 10.048?
The perimeter of a semicircle whose diameter is 4.
The formula for circumference when using the diameter.
What is
C=dpi
The radius of a circle with a circumference of 50.24.
What is 8?
The diameter of a circle with a circumference of 31.4.
What is 10?
The circumference of a circle with a diameter of 12.12.
What is 30.0568?
The perimeter of a semicircle whose diameter is 9.
What is 23.14?
The formula for the perimeter of a semi-circle.
What is
P_("semicircle") = C/2 + d
The radius of a circle, when the circumference is 3.14.
What is 0.5?
The diameter of a circle with a circumference of 14.13.
What is 4.5?
The circumference of a circle whose radius is 3.14.
The perimeter of a semicircle whose circumference is 18.84.
What is 24.84?