Fill in the missing amounts.[fill in the question marks] need now

july aug. sept. oct. nov. dec.

receipts $500 $550 $700 $850 $795 $715

expenses$490 $550 $600 $795 $ ? $650

july aug sept oct nov dec

net cash flow$ ? $0 $ ? $55 $45 $ ?

july aug sept oct nov dec

cumulative balance$10 $ ? $110 $? $210 $275

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)