How Do You Find the Diameter of a Circle if You Know its Radius?

How Do You Find the Diameter of a Circle if You Know its Radius?

Note:

When you know the radius of a circle, you can find the diameter of that circle with a simple multiplication problem! Follow along with this tutorial to learn how to find the diameter of a circle when you're given the radius.

Keywords:

  • problem
  • example
  • circle
  • radius
  • diameter
  • d=2r

Background Tutorials

  • Center, Radius, and Diameter

      • What is a Circle?What is a Circle?

      What is a Circle?

      Circles are a fundamental part of math! In this tutorial, you'll be introduced to circles and see the different parts of a circle such as the diameter, radius, and chord. Check out this tutorial to learn about circles!

Further Exploration

  • Circumference of a Circle

      • What is Circumference?What is Circumference?

      What is Circumference?

      The circumference of a circle is the distance around that circle. But what is the formula to find the circumference? In this tutorial, you'll learn the formulas for the circumference of a circle. Take a look!