If the radius of the circle is 1, the area is pi. (3.14159 square units)
The circumference is twice that. (6.28318 units)
The circumference also doubles.
The circumference of a circle = 2*pi*r. if you triple r, the circumference is tripled also.
Formula of Circumference of a circle: 3.14*Diameter of the circle. You could also do: 3.14*3.14*radius.
The circumference of a circle is equal to its diameter times pi. This is also equal to two times its radius times pi.
The circumference is directly proportional to the radius. So increasing the radius by 50% causes the circumference to also increase by 50%.
The circumference also doubles.
The circumference also doubles.
The circumference of a circle = 2*pi*r. if you triple r, the circumference is tripled also.
Formula of Circumference of a circle: 3.14*Diameter of the circle. You could also do: 3.14*3.14*radius.
The circumference of a circle is equal to its diameter times pi. This is also equal to two times its radius times pi.
It will also be halved as circumference = 2Ï€r
The circumference also doubles or trebles. The circumference is directly proportional to the radius, with the constant of proportionality = 2*pi.
The circumference is directly proportional to the radius. So increasing the radius by 50% causes the circumference to also increase by 50%.
The radius of a circle is any straight line from the centre of the circle to its circumference. The radius can also refer to the length of this line.
The circumference of a circle is 360 degrees. The circumference of a circle is also 2*pi*radius or diameter*pi.
No. A chord is a straight line joining two points on the circumference of a circle whereas a radius joins only one point on the circumference to the circle centre. A diameter is a straight line joining two points on the circumference (via the circle's centre) and so is also a chord. (Yes, but the question is about a radius, not a diameter!)
When you triple the radius of the circle . . . -- The diameter also triples. -- The circumference also triples. -- The area is multiplied by 9 .