Of the four choices given, which two, when written as a system, have a solution of (-4,5)? х
-1
2
3
5
y
2
-1
-2
4
2x+y=-3
-2x+y=-3
х
-1
2
3
7
у
0
3
4
-8
0 2x+y=-3 and
х
-1
2.
3
5
y
2
-1
-2
--4
0-2x+y=-3 and
Х
-1
2.
3
5
y
2
-1
-2
-4

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)