The radius of a circle is 8 ft. Find the circumference in terms of pie? ( please its urgent)

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Which of the following is the correct ratio for converting kilograms to grams

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?