During a two-day fun fair, Andrew’s snack stall sold 6 quarts of juice each day and Ashley’s stall sold 10 quarts of juice each day. How many more quarts of juice were sold by Ashley’s stall than Andrew’s snack stall during the fair? ITS NOT D) 4 QT SI DONT CHOOSE IT
A) 12 qt
B) 10 qt
C) 8 qt
D) 4 qt

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)