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).
The formula to find a circle's area $$ \pi $$ (radius) 2 usually expressed as $$ \pi \cdot r^2 $$ where r is the radius of a circle.he formula to find a circle's area $$ \pi $$ (radius) 2 usually expressed as $$ \pi \cdot r^2 $$ where r is the radius of a circle.