Escitalopram is an oral drug that is used for treating depression and generalized anxiety disorder. Chemically, escitalopram is similar to citalopram . Both are in a class of drugs called selective serotonin reuptake inhibitors (SSRIs), a class that also includes fluoxetine , paroxetine and sertraline .
1 A circle is all of the points that are a fixed distance, known as the radius, from a given point, known as the center of the circle. 2  Explore the standard equation of a circle using the applet below (Go here for a larger version).
Using the Equation with the Radius. Let's see the two ways we can use the equation of the circumference using the radius. The first way is if we are asked to find the circumference given the radius of the circle. For example, our problem has given us a radius of 6 inches.We will use the equation for the circumference using the radius. We will plug in our radius of 6 inches into the r variable.We will also replace the pi with 3.14.sing the Equation with the Radius. Let's see the two ways we can use the equation of the circumference using the radius. The first way is if we are asked to find the circumference given the radius of the circle. For example, our problem has given us a radius of 6 inches.