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A plane intersects a sphere that has a radius of 13 cm. The distance from the center of the sphere to the closest point on the plane is 5 cm. What is the radius of the circle that is the intersection of the sphere and the plane?
A. 8 cm
B. 10 cm
C. 12 cm
D. 13 cm

  • geometry - ,

    Draw the figure and convince yourself that the radius of the circle is given by Pythagoras theorem

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