The length of py (the minor arc) is 15 cm. What is the circumference of OZ? A. 540 cm
B. 450 cm
C. 94.2 cm
D. 426 cm
E. 360 cm
F. 180 cm

Np4=12np2 with clear explanation.

Max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)