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Graph:
Furthermore, the circle must have an area other than 0, otherwise it would be just a point. A>0 Let's graph this function in our graphing calculator! We will use x as the independent variable and y as the dependent variable, as these are the only variables we are allowed to use in the calculator. A ⇔ x r ⇔ y Now, press Y= and type the function.
Before we push GRAPH, we will change the window settings in order to take a better look at the graph. This can be done by pressing WINDOW and changing the window settings.
Now, we push GRAPH.
We found that the area of a circle with a radius of 5.4 inches is about 91.91 inches squared. Please note that this is not the only answer, as the cursor position may differ from calculator to calculator.