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10 August, 08:22

Both circle Q and circle R have a central angle measuring 75°. The ratio of circle Q's radius to circle R's radius is 2:5. Which ratio represents the area of the sector for circle R to the area of the sector for circle Q?

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  1. 10 August, 11:20
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    The ratio of similar areas is the square of the ratio of the scale factor.

    Circle R's sector is (5/2) ² = 25/4 the area of Circle Q's sector.
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