Math help please!!!!!!!!

Mathematics

2 answers:

Marina CMI [18]3 years ago

8 0

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.

Elis [28]3 years ago

5 0

The second question is 2.5 !!!

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Two ducklings wander away from the nest while their mother is away. The first duckling's displacement (distance and direction) f

aksik [14]

the second duckling is wandering by 2.6 units distance than the first duckling .

<u>Step-by-step explanation:</u>

Here we have , Two ducklings wander away from the nest while their mother is away. The first duckling's displacement (distance and direction) from the nest is (12,5) The second duckling's displacement is (13,-8) . We need to find How much farther did the second duckling wander than the first duckling. Let's find out:

Let a = (12,5) and b =(13,-8)

The distance each duckling wandered is the magnitude of its displacement vector. Therefore, the expression Distance second duck wandered is given by :

⇒ $D = |b|-|a|$