Learn how to evaluate the definite integral by graphing a semi circle

The video tutorial explains how to rewrite an equation to identify it as a circle equation, with a center at (0,0) and a radius of 2. It further discusses how this equation represents a semicircle, focusing on the positive form. The tutorial concludes by calculating the area of the semicircle, using the formula for the area of a circle and adjusting it for the semicircle.

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