Terry edin and Gordon are hygiene inspectors three takeaways kebabuzz fishurchips and pizzarella are all to be inspected next Thursday. It is decided to share the work so that all inspectors will visit one takeaway each, chosen at random we want to list all possible different ways they could share work one possible way is shown below terry to kebabuzz exon to fishurchips Gordon to pizzarella complete the list using the abbreviation convention used in the example

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)