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Answer:
D. 14.32
Step-by-step explanation:
The formula for standard deviation is:

The mean μ is 33.
The (x minus μ) squared are 361, 49, 49, 361 respectively.
So that the SD = 
Answer:
57/26 or 2 5/26
Step-by-step explanation:
The area of triangle ABC with the given parts is c- 7.3in