Find the volume of a cylinder whose base is an ellipse with axes of 12 inches and 7 inches. the altitude of the cylinder is 21 inches. round to the nearest tenth of a cubic inch. a. 1,522.41 in3 b. 1,866.45 in3 c. 1,385.45 in3 d. 1,213.12 in3

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.