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The circumference of a circle, C, is directly proportional to the length of its radius, r. Write down a formula,using k, connecting the circumference of the circle and the length of its radius.

The Circumference Of A Circle C Is Directly Proportional To The Length Of Its Radius R Write Down A Formulausing K Connecting The Circumference Of The Circle An class=

Sagot :

The proportional relationship connecting the circumference of the circle and the length of its radius is:

[tex]C = kr[/tex]

What is a proportional relationship?

  • A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:

[tex]y = kx[/tex]

  • In which k is the constant of proportionality.

In this problem:

  • The output is the circumference of the circle.
  • The input is the radius of the circle.

Hence, the formula is:

[tex]C = kr[/tex]

You can learn more about proportional relationships at https://brainly.com/question/25815502

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