Answer:
First question: 2.04%
Second question: 2.5
Third question: 339.29
Step-by-step explanation:
First, find the volume of Container A. This can be found by pir^2h. r is 6, and h is 12, so the volume is 1357.17. Next, find the volume of Container B. We will use the same equation. This gives us 1385.44 for the volume of Container B. We will subtract the volume of A from B to see the difference. The difference is 28.27. We will then take the difference and divide is by the volume of B. This is 0.02. This means that 2% of Container B will be empty. Specifically, 2.04%.
For this one we can simply divide 20 by 8. This gives us a scale factor of 2.5.
In order to find the surface area of a cylinder we will use the equation 2pirh + 2pir^2. We will plug in the values of r and h in order to give us the surface area. This gives us the answer 339.29.
