The radius of a sphere is increasing at a constant rate of 10 inches per second. At the instant when the volume of the sphere is 531 cubic inches, what is the rate of change of the volume? Round to 3 decimal places, work not needed.

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.