#4: The data is symmetric, which means it is C. NOT SKEWED
#3: Adding the outlier will not change the median, but it will decrease the mean. So the answer is B.
Answer:
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For the first one write 9 divided by 2 gives your your radius an it’s 3.5. the formula is 2 x 3.14 x radius and that gives you 21.98.
the 2nd one is 2 x 3.14 x 9 = 56.52
the 3rd is 2 x 3.14 x 5= 31.4
formula is always 2 x 3.14 (or pie) x radius
to get your radius from your diameter you do your diameter divided by 2
2/5. The answer is 2/5 since 4/10 in simplest form is 2/5
