This math topic involves calculating the sector angle of a circle given the sector's area and the circle's radius. It is designed for learners to deepen their understanding of circle geometry, specifically how to derive angles from areas in circular sectors. Each question provides a specific area and radius, and the learner must calculate or select the nearest integer for the sector angle from multiple-choice options. This topic falls under an introductory unit on the geometry of circle areas, sectors, and segments.
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A sector with area 13.09 in a circle of radius 5 has what sector angle?