The answer 8+2 is going to be 10
Parameterize the surface (call it ) that has as its boundary by
with and .
Take the normal vector to to be
Compute the curl of . We have
Then by Stoke's theorem, the line integral is
We can verify this result by computing the line integral directly. Parameterize by
with . Then
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<span>The best and most correct answer among the choices provided by the question is 86.</span><span>
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<span>Hope my answer would be a great help for you.</span></span>
So let's find the unit rate of these.
18 mi/ 2 hrs = 9 mi/ 1hr
45 mi / 5 hrs = 9 mi/ 1 hr
So you are running 9 miles an hour.
If you have any questions please comment! :)