Find the volume of a sphere with a radius of 7.8cm.

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect

Which best describes the function on the graph? direct variation; k = −2 direct variation; k = -1/2 inverse variation; k = −2 inverse variation; k = -1/2

Which of the following statements would be sufficient to prove that parallelograms pqrs is a rectangle ?