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1. If we want to intergrate over regions that are circular in a plane it is better to use polar coordinates.

   Since, we do integration using polar coordinate when our function or our region have some kind of roational symmetery.

   And, we use rectangualr coordinate system to uniquely identify points in a plane using ordered pair (x, y). It is based on the two dimensional plane consisting of the x-axis and the y-axis.

   Therefore,

   If we want to intergrate over regions that are circular in a plane it is better to use polar coordinates.

   Find out more information about polar coordinates and rectangular coordinates here:

   https://brainly.com/question/21432890

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