The table shows the change in the amount (in gallons) of gasoline in a car over a period of five days. What is the total change in the amount of gasoline in the car over the five day period. Write your answer as a decimal.
Day Change in amount of gasoline (in gallons)
1
-2.05
2
-2.30
3
12.25
4
-0.35
5
-1.15
The change in the amount of gasoline in the car is
gallons

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)