Answer:
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Step-by-step explanation:
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The nearest ten thousand to 16,500 is 20,000. So it is rounded up to 20,000.
Because 16,500 is more nearest to 20,000 than 10,000, a the second digit after 1 is 6 which is greater than 5 and close to 10 than 1. if it is less than 5, for example if the number is 14,500 then the number will be rounded to 10,000 as that one is more closest than 20,000.
But here 16,500 is rounded to 20,000.
The derivative of the vertical position is
.. y' = 2/40*(x -50)
so the integral that gives the length of the curve the kite traveled is

It is convenient to let a graphing calculator compute this integral numerically. If you want to do it analytically, a table of integrals can be handy. The indefinite integral is

This evaluates to

feet
The lower square root would be 4.2