3 Gerardo is member of the long jump team. At practice his teammate's longest jump of the day was 15 feet. 4 1 Gerardo jumped several times at practice that day, and his jumps were at least foot less than his teammate's 2 longest jump. Which inequality represents d, the possible distances in feet of Gerardo's jumps that day? 1 3 15 4 dt 1 3 > 15 4 3 8 Id< 15 D d+į s 15 3 4 4

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)