Daniel wants to save money. The ratio of the amount of money in his savings account to the amount of money in his checking account was 1:6. Because Daniel is trying to get better at saving money, he moves money out of his checking account and into his savings account. Now the ratio of the amount of money in his savings account to the amount of money in his checking account is 4:3. If Daniel had $936 in his checking account before moving money, how much money does he have in each account after moving money?

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)