Acircle of radius 1 centered at (4, 0) is rotated about the y-axus. draw a picture of the three-dimensional shape that is produced when the circle is rotated about the y-axis. in two or more complete sentences, describe the three-dimensional shape. upload both parts a and b as your final answer.

The three-dimensional shape that would result would be in the shape of a donut. 

Imagine taking a knife and cutting a slice in a donut. The cross-section of where you cut would be a circle. This is what would happen if you rotated the circle around the y-axis. It would be like that cross-section of the donut going around the entire circle.

To begin lets say year one the population is 2,000

assume this in percent we can say that 2,000=100%

at the end of this year the population will have grown by 4% meaning that

100%+4% will be the new population =104%

but we know that 100%=2,000 so what about 104%=X?

so (104*2000)/100=2,080

So year 1 the population will have grown by 80 people amounting to 2080 people.

Now do it manually year by year until we reach the 15th year. i will help you up to year 3

2nd year= (2080*104)/100=2163.2

3rd year= (2163*104)/100=2249.728

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