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please help with both parts.

I would appreciate an explanation of how to set up the equations.

Problem 7.4 The velocity within the eye of a tornado is defined by ? 0, te = (0.2r) m/s where r is in meters (Figure 1) Part A Determine the circulation at r 45 m Express your answer using three significant figures ?. 6100 SubmitP Incorrect. Try Again Figure 1 of 1 Part B Determine the circulation at r275 m Express your answer using three significant figures vec m2/s 17 2 Submit Request Answer

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