# Is the circumference of a circle is tripled what happens to its radius?

Would you like to merge this question into it?

#### already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it?

#### exists and is an alternate of .

Suppose:
(1) C = 2πr
(2) C' = 2πr'
(3) C' = 3C

Then
C' = 3(2πr) = 2π(3r)

But
C' = 2πr', so 2πr' = 2π(3r)

and finally

r' = 3r.
39 people found this useful

# When the radius of a circle is doubled what happens to the circumference?

\nsince C=2Pixr, if we double r, we need to double C also.\n2C=2Pix 2r

# If you triple the radius of a circle how is its circumference affected?

The circumference of a circle = 2*pi*r. \n. \nif you triple r, the circumference is tripled also.

It gets bigger.

# What happens to the circumference of a circle when the radius is doubled?

The circumfrence would double Example : C of 5 cm radius circle = 3.14 *2*5 C=3.14 C of 10cm radius circle = 3.14*2*10 C =62.8

# What happens to the circumference of a circle when the radius is doubles?

The circumference also doubles.

# What if you triple the diameter of a circle what happens to the circumference?

The circumference is tripled. C=pi*d, so pi*(3d) = 3C, where d is diameter and C is circumference.

# What happens to the circumference of a circle when the radius doubles?

If the radius of a circle doubles, the circumference doubles , and so does the diameter.

# If the circumference of a circle is tripled what happens to its radius?

The radius is directly related to the circumference of a circle by C=Ï 2R so it would get proportionately larger as the circumference grows. If you start with C=Ï 2R w

# If the radius of a circle is tripled what happens to the circumference?

Circumference = pi x diameter so if the radius is 5 then the diameter is 10 Circumference = pi x 10 = 31.415 If we triple the radius to 15, then the diameter is 30, so

# When the radius of a circle is tripled what happens to the area?

It is increased nine fold. New Area = 9*old area.

# What happens to the circumference of a circle if you double the radius?

The circumference also doubles.

# What happen to the area of circle when the radius is tripled?

If you triple the radius of a circle, the area will increase by 9. Area is proportional to the square of the radius.

# What happens if you triple the radius of a circle?

If you triple the radius of a circle . . . -- You should not expect anything to happen. Those around are likely to remain completely unaware that you have done anything to yo

# What happens if you triple the radius in a circle?

nothing you will just just get the radius in 3 circles.

# What happens to the circumference of a circle if you triple the radius?

Since circumference is proportional to the diameter (the proportionality is the definition of the irrational number pi) and the radius is just twice the diameter, if you tripl

# What happens to the circumference of a circle if youndouble the radius?

Circumference = 2 x Ï x radius double radius: new_circumference = 2 x Ï x (radius x 2) = (2 x Ï x radius) x 2 = circumference x 2 . â if the radius

It would triple