The total area in square inches, of a picture in a picture frame is calculated by the expression of 63x2 + 117x + 54, where I is the width of the picture frame. Which of the following are factors of 63.2 + 117x + 542
Select all that apply
(8.2 + 7)
(6x + 6)
(9x +9)
(72+6)
(9x +54)
(14x + 2)
(18x +9)
(142 +54)

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)