<h2>
Answer:</h2>
cylinder
<h2>
Step-by-step explanation:</h2>
Archimedes was a brilliant mathematician. This man rose the formula of the volume of a sphere by comparing this shape to a cylinder. The volume of a sphere is hard to calculate by comparing this object to a cube. So Archimedes imagined cutting a sphere into two halves, called hemispheres. So an hemisphere gave him a flat surface, which is easier to work with. Therefore, if he'd find the volume of a hemisphere, then he'd multiply the result by 2 and would get the volume of a sphere. Then he imagined a hemisphere within a cylinder as the one shown below. Also, he imagined a cone within the same cylinder. <em>What did he find? </em>He found that the volume of the hemisphere should be equal to the volume of the cylinder minus the volume of the cone:

Then the volume of a sphere is twice this volume:

Answer:
I would put A
Step-by-step explanation:
Because B C D all say plus and that is wrong
<em>it this was helpful can I please have brainliest</em>
Answer:
<h2>A. 168</h2>
Step-by-step explanation:


Answer:$12 dollars and hour
Step-by-step explanation:
7 hours times 5 days a week equals 35 hours. 420/35 hours equals 12 dollars