Any cut 2 2/4 feet of balsa wood for the length of a kite he cut 3/4 feet for the width of the kite how much longer is the lengt
2 answers:
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The Jacobian for this transformation is
with determinant , hence the area element becomes
Then the integral becomes
where is the unit circle,
so that
Now you could evaluate the integral as-is, but it's really much easier to do if we convert to polar coordinates.
Then