What is the equation to find the radius of a circle?

Answer The radius of a circle is a line drawn from the center of the circle to any point on the circle's circumference. Use one of the equations described below to find the radius of a circle.DiameterThe ... Read More »

Top Q&A For: What is the equation to find the radius of a ci...

A circle is 2106 sq ft. find the radius of the circle to the nearest foot (use 3.14 for pi)?

Since area = r*r*pi, and we want to find the radius, let's set this up like an equation, using r as the variable that represents the radius (and the value we're looking for). Let's also write it as... Read More »

How do I Find the Radius of a Base Circle When Given the Volume & Height?

Finding the radius of the base circle of a cone can tell you exactly how much ice cream you can stuff into your ice cream cone. It can also tell you whose head will fit in the party hats or how muc... Read More »

What Special Relationship Is Seen Between the Radius of the Circle & the Line Tangent to the Circle?

A circle is a figure in which every point on the outside of a circle is an equal distance from the circle's center. The major properties of a circle include diameter, circumference, area, and radiu... Read More »

How to Calculate the Radius of a Circumscribed Circle of a Triangle?

Geometric theorems and trigonometric functions govern the circumscribed circle of a triangle. A circumscribed circle goes around the outside of a triangle and touches each of the vertices. You can ... Read More »