Answer:
?
Step-by-step explanation:
You subtract 1.1 each time so the answer is 6.6 (a)
Step-by-step explanation:

add the volume of a cone, V=1/3 pi times radius squared times h. The volume of the cone is V=355. Then you add the volume of the cone to the volume of the cylinder. the formula for the volume of a cylinder is V= pi times radius squared times h. So the volume of the cylinder will be V=923. if you add those two together the overall volume is 1,278.