What is the length of an arc if we know the radius of curvature is 12in. and the area of the sector created is 252in^2 a. 36in b.12in c.42in d.24in

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.

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