Cylinder a has a radius of 1 and a height of 4. cylinder b has a radius of 2 and a height of 4. find the ratio of the volumes of the two cylinders. (there is not supposed to be a picture for this problem - if you'd like, you may draw the cylinders to find the ratio of the volumes.)

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.