The circumference of a circle is 13π ft. What is the area, in square feet? Express your answer in terms of π.

Is a positive integer raised to a negative power always positive

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

With number 11 ( show how you got the answer)