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THE FORMULA FOR FINDING THE CIRCUMFERENCE IS:
CIRCUMFERENCE EQUALS DIAMETER TIMES 3.14
In basic words:
What do you know?
You know you need to find the circumference of the circle, which is the distance all the way around the circle.
You know the radius is 25 inches, the radius is the measurement from the center to the circumference of the circle.
You know the formula needs the diameter, a diameter being the length of a line connecting two points on the circumference, touching the center of the circle, maintaining a straight line.
With all this information, you can figure out that the radius is half the diameter.
Now, begin your math.
Problem: What is the circumference of a circle when you know the radius is 25 inches?
Formula: Circumference= Diameter X 3.14 which is known as pi.
Radius Diameter Circumference
- R=25
D=R times 2
- Replace variable R with the correct number:25
- 25 multiplied by 2 is 50 which means that D=50
- 50 multiplied by 3.14 is 157
- The circumference is 157
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A circumference is 24 what is the radius?
If the circumference is 24 the radius will be: 3.82
If the circumference of a circle doubles the radius?
IMPOSSIBLE circumference = 2*pi*radius if circumference = 2*radius: 2*radius=2*pi*radius 2*radius/(2*radius)=2*pi*radius/(2*radius) 1=pi pi= 1 therefore it is impossible to have a circumference that is twice that of the radius
What is the radius if circumference is 25.12?
circumference = 2 × π × radius → radius = circumference ÷ (2 × π) = 25.12/(2π) ≈ 4 units
What is the circumference of radius 12yd?
The radius is half the circumference, so 24 yards
What is the circumference of a circle that has a radius of 2 meters?
Circumference = pi * 2 * radius, so with a radius of two meters, the circumference must be 12.56636... meters.
